ESAWebb Images

IRS 3 Field (NIRCam and MIRI image)

Tue, 11 Aug 2026 10:00:00 +0200

This image features data from Webb’s NIRCam (Near Infrared Camera) and MIRI (Mid Infrared Instrument) to capture the most detailed mid-infrared view yet of the field that hosts the highly evolved star IRS 3, which is located just 0.55 light-years from Sagittarius A*, the Milky Way galaxy's central supermassive black hole.

An international team of astronomers have discovered that dust and water can form and survive surprisingly close to this supermassive black hole. The observations reveal that the evolved star IRS 3 continues to enrich its surroundings with newly formed material despite the intense radiation environment around Sagittarius A*.

The data in this image were taken with Webb programmes #1939 (J. Lu), #3571 (F. Yusef-Zadeh), #2491 (N. B. Sabha), and #2075 (C. Chan).

[Image description: A dense star field fills the entire image, with countless stars scattered across a backdrop of glowing clouds in shades of red, orange, pink, white, and blue. At the centre, a brilliant concentration of stars creates a bright, almost white core surrounded by intricate filaments and wisps of illuminated gas and dust that radiate outward. Dark, irregular patches of opaque dust interrupt the glowing clouds, particularly toward the left side of the image, where they appear as silhouetted shapes against the brighter background. The surrounding stellar population varies in brightness and colour, with cool blue stars and warmer orange and red stars distributed throughout the scene.]

IRS 3 Field (MIRI image)

Tue, 11 Aug 2026 10:00:00 +0200

This image features data from Webb’s MIRI (Mid Infrared Instrument) to capture the most detailed mid-infrared view yet of the field that hosts the highly evolved star IRS 3, which is located just 0.55 light-years from Sagittarius A*, the Milky Way galaxy's central supermassive black hole.

The data in this image were taken with Webb programmes #3571 (F. Yusef-Zadeh), #2491 (N. B. Sabha), and #2075 (C. Chan).

[Image description: A bright, densely populated star cluster lies near the centre of the image, surrounded by intricate clouds of glowing gas and dust in shades of red, pink, orange, and blue. Dark lanes of dust weave through the nebula, contrasting with the luminous central region. Countless stars are scattered across the field, with a few brighter foreground stars showing Webb's characteristic diffraction spikes. An irregular black region occupies the lower-right corner of the image, indicating an area where no observational data was available.]

Star IRS 3 (close-up NIRCam image)

Tue, 11 Aug 2026 10:00:00 +0200

This image shows a close-up of the surrounding region of the highly evolved star IRS 3, which is located just 0.55 light-years from Sagittarius A*, the Milky Way galaxy's central supermassive black hole.

The data in this image were taken with Webb programme #1939 (J. Lu).

Location of star IRS 3

Tue, 11 Aug 2026 10:00:00 +0200

This image showcases the location of the highly evolved star IRS 3, which is located just 0.55 light-years from Sagittarius A*, the Milky Way galaxy's central supermassive black hole. The images show a progressinvely closer view of the region using ground- and space-based data.

Location of star IRS 3

Tue, 11 Aug 2026 10:00:00 +0200

This image showcases the location of the highly evolved star IRS 3, which is located just 0.55 light-years from Sagittarius A*, the Milky Way galaxy's central supermassive black hole.

The data in this image were taken with Webb programmes #1939 (J. Lu), #3571 (F. Yusef-Zadeh), #2491 (N. B. Sabha), and #2075 (C. Chan).

IRS 3 Field (NIRCam image)

Tue, 11 Aug 2026 10:00:00 +0200

This image features data from Webb’s NIRCam (Near Infrared Camera) to capture the most detailed mid-infrared view yet of the field that hosts the highly evolved star IRS 3, which is located just 0.55 light-years from Sagittarius A*, the Milky Way galaxy's central supermassive black hole.

The data in this image were taken with Webb programme #1939 (J. Lu).

[Image description: A densely packed field of stars fills the image, with a bright cluster of stars near the centre surrounded by glowing clouds of gas and dust in soft shades of red, pink, and white. Dark patches of dust appear scattered throughout the scene, contrasting with the luminous background. Several bright foreground stars display Webb's distinctive six-pointed diffraction spikes, while countless fainter stars extend across the entire image.]

Lion Nebula (MIRI image)

Mon, 10 Aug 2026 16:00:00 +0200

The James Webb Space Telescope observed planetary nebula NGC 2392 in mid-infrared light, revealing the presence of dust and its varying structures within this tumultuous environment. Nicknamed the Lion Nebula due to its appearance, this collection of gas and dust is created and sculpted by the remains of a dying star, which is in the center and resembles the button nose of the lion.

While some dust is being destroyed by the bubble of ionized gas that forms the lion’s face, most of the gas is being ejected and migrating away from the star due to its radiation. In this image, cyan highlights the lion’s mane, which is the interior of a dust shell that is being illuminated by the central star. Within the mane, toward its edges, are purple clumps that look like they have cometary tails. These fluffy structures are also dust, which have managed to survive so far and protect the structures behind them.

[Image description: Planetary nebula NGC 2392, also called the Lion Nebula, against the black background of space. The nebula is in the centre, circular in shape, and looks like a male lion’s head. In the very centre is a small, bluish-white circle with eight-point diffraction spikes, a white dwarf star. Surrounding the star are light purple-red cavernous bubbles and shell-like rings. The bubbles and shells collectively form an oval with two small, wide arcs near the top, reminiscent of a lion’s face and its ears. What appears to be extended outward from the lion’s face is a thick ring of cyan material. The width of the ring is consistent throughout and resembles a mane. The area closest to the lion’s face looks cloudy, while the edges of the mane look like there are purple clumps of dust with comet-like tails and strands. In the background are distant galaxies and stars. Some galaxies appear as small purple points of light and others with visible blue spiral structures. A couple of the stars have diffraction spikes.]

Lion Nebula (NIRCam + MIRI image)

Mon, 10 Aug 2026 16:00:00 +0200

The James Webb Space Telescope recently imaged planetary nebula NGC 2392, which is nicknamed the Lion Nebula due to its distinct shape. This near- and mid-infrared composite image reveals the complex structure of the nebula, which has formed and continues to be sculpted by the remains of a dying star. The stellar core, also known as a white dwarf, is located at the centre and looks like the button nose of the lion.

The central dying star is so hot that its radiation is “cooking” everything from the inside and producing a bubble of ionized hydrogen gas as it does. The gas bubble, which is the lion’s “face,” features cavernous shells and rings with tendrils that are expanding and destroying dust upon encounter.

However, not all dust is obliterated from the scene. The lion’s mane is the interior of a dust shell that is being illuminated by the central star’s core. Within the mane some compact clumps of dust (red and orange) have managed to survive so far and are protecting the material that lies behind them. Additional clumps of molecular hydrogen appear yellow.

The Lion Nebula is a snapshot in time. It’s taken several thousand years for the gas and dust to be shaped in this way, and it continues to change as the star drives away the material. Astronomers estimate NGC 2392 will eventually disperse in about 10,000 years, which is a relatively short period in astronomical terms.

[Image description: Planetary nebula NGC 2392, also called the Lion Nebula, against the black background of space. The nebula is in the centre, circular in shape, and looks like a male lion’s head. In the very centre is a small, pinkish-white circle with eight-point diffraction spikes, a white dwarf star. Surrounding the star are light purple-pink cavernous bubbles and shell-like rings. The bubbles and shells collectively form an oval with two small, wide arcs near the top, reminiscent of a lion’s face and its ears. What appears to be extended outward from the lion’s face is a thick ring of purple-blue material. The width of the ring is consistent throughout and resembles a mane. The area closest to the lion’s face looks cloudy, while the edges of the mane look like there are clumps of dust with comet-like tails and strands. In the background are distant galaxies and stars. Some galaxies appear as small yellow and orange points of light and others with visible spiral structures. A couple of the stars have diffraction spikes.]

Webb opens a Treasure Chest filled with stars

Thu, 06 Aug 2026 10:00:00 +0200

This NASA/ESA/CSA James Webb Space Telescope Picture of the Month takes us to a fantastical realm within our home galaxy, where piercing starlight and billowing winds sculpt dust clouds into inventive shapes. This scene is from the Carina Nebula, which lies just 7500 light-years away in the constellation Carina (the Keel).

Spanning roughly 260 light-years, the nebula is home to an incredible collection of objects, including the Cosmic Cliffs revealed in the first-ever Webb image release. The Carina Nebula is also the nearest high-mass star-forming region that allows astronomers to study the full range of star formation. This nebula houses some of the most massive stars in our galaxy as well as tens of thousands of protostars, offering a valuable opportunity to understand how stars shape their neighbourhoods.

The feature highlighted in today’s image, aptly called the Treasure Chest, looks right at home in this celestial sculpture garden. The Treasure Chest is what’s known as a cometary globule. A cometary globule is an isolated cloud of gas and dust with a dense, dark head and a sweeping tail. These clouds often somewhat resemble comets, but the Treasure Chest looks distinctly like a wooden chest with its lid wide open.

However, this chest doesn’t contain jewels or gold coins, but instead a compact cluster of young stars. These stars are responsible for the otherworldly glow coming from within the Treasure Chest, revealed by Webb’s sensitive Near-Infrared Camera (NIRCam). Researchers estimate that the Treasure Chest’s cluster contains about 70 stars, the most massive of which is a rare O-type star roughly 19 times as massive as the Sun.

The star cluster is likely around 1.3 million years old, though earlier estimates found it to be as young as just 100 000 years old. Because of its youth, the cluster is still deeply embedded within the dusty clouds of the Treasure Chest. The individual stars in the cluster are wrapped up in dust as well; astronomers have found evidence that many of these stars are surrounded by circumstellar discs. Over time, the brilliant starlight from these young stars will dissipate the surrounding cloud and reveal the entire cluster.

The key to the Treasure Chest’s sculptural shape lies outside this image: just 39 light-years to the northwest, as measured on the sky, sits Eta Carinae, the most luminous object in the entire Carina Nebula. Eta Carinae is a star system containing at least two stars, one of which is 100 times as massive as the Sun. This star alone is about 5 million times as luminous as the Sun. Adding to this intense radiation is the nearby star cluster Trumpler 16, which also contains several extremely hot massive stars.

The radiation and winds from these massive stars are largely responsible for the current appearance of the Treasure Chest, though the star cluster embedded within it is also eating away at the cloud from within. There’s some debate as to which came first, the cometary shape of the cloud or the star cluster it contains. The likeliest scenario suggests that the star cluster formed first in a cloud of gas that was larger than the Treasure Chest is today. Then, the powerful stellar feedback from nearby stars whisked away the less-dense gas, leaving behind only the denser gas that makes up the Treasure Chest.

With Webb, astronomers have carried out an observing programme (#5408; PI: Reiter) dedicated to studying how young stars in the Carina Nebula collect gas from their surroundings and expel it through outflows. These observations from Webb will help astronomers understand how young stars impact their environments, allowing them to craft spectacular scenes like this one.

[Image Description: A region of space filled with bright stars and clouds of gas. In the centre, the densest clouds form the shape of a chest with its lid open. The chest appears to glow from within. At its base it breaks apart into long pillars of thick gas. Many of the gas clouds in the background are dark orange globules, while others form large, pale hazes. A few brightly shining stars lie in the foreground, the biggest and brightest in front of the chest’s lid.]

Beta Pictoris system (NIRSpec IFU image and spectrum)

Wed, 15 Jul 2026 14:00:00 +0200

Researchers used the NIRSpec (Near-Infrared Spectrograph) Integral Field Unit on the NASA/ESA/CSA James Webb Space Telescope to map chemical contents of the Beta Pictoris system. As a result, they discovered a third planet, Beta Pictoris d, orbiting the young star.

Instead of identifying the planet as a bright point of light, as seen in the reconstructed image, researchers searched the spectroscopic data for the molecular signatures expected from a giant planet atmosphere, allowing the object to stand out from the surrounding debris disc.

The extracted NIRSpec and MIRI (Mid-Infrared Instrument) spectra of Beta Pictoris d display a distinctive series of carbon monoxide (CO) absorption lines. This molecular “fingerprint” identified the object as a giant planet, while measurements of the Doppler shift of the spectral lines provided the planet’s radial velocity, confirming it is gravitationally bound to the Beta Pictoris system.

[Image description: The image at the left shows two exoplanets of the Beta Pictoris system. At the centre, there is a white star symbol, which represents light blocked from the host star. Immediately to the left of the star symbol, there is a bright orange-whitesh smudge, labeled b. To the right of the star symbol is a blurry orange smudge labeled d. There is a white circle around this smudge with lines drawn to the spectrum at the right. The x-axis is labeled “Wavelength of Light” and extends from 4.2 to 5.2 microns. The y-axis is labeled “Brightness.” An up arrow is labeled “brighter,” a down arrow “dimmer.” There are two jagged horizontal lines across the graph. One is white, the other is maroon (the former labeled “Webb data”, the latter labeled “Best fit model” in the bottom left corner). A blue vertical column spanning from about 4.3 microns to 5 microns is labeled Carbon Monoxide, CO.]

Centaurus A (annotated MIRI image)

Mon, 06 Jul 2026 16:00:00 +0200

Annotated image of the active galaxy Centaurus A captured by the James Webb Space Telescope’s MIRI (Mid-Infrared Instrument), with compass arrows, a scale bar, and colour key for reference.

The north and east compass arrows show the orientation of the image on the sky. Note that the relationship between north and east on the sky (as seen from below) is flipped relative to direction arrows on a map of the ground (as seen from above).

The scale bar is labeled in light-years.

This image shows invisible mid-infrared wavelengths of light that have been translated into visible-light colours. The colour key shows which MIRI filters were used when collecting the light. The colour of each filter name is the visible light colour used to represent the infrared light that passes through that filter.

[Image description: Annotated image of galaxy Centaurus A captured by Webb’s MIRI (Mid-Infrared Instrument), with compass arrows, a scale bar, and colour key for reference. A horizontal image of the galaxy stretches across a black background filled with thousands of tiny purple, pink, and white points of light. The galaxy is brightest at its centre. Delicate loops and ribbons of pink and lavender arc above and below the centre of the image in the shape of an ‘S’. A band of gray and white dust in the shape of a parallelogram cuts across the middle of the galaxy. The galaxy’s outer edges fade into soft plumes with feathery textures that stretch toward the left and right sides of the image. Below the image is a colour key showing which of Webb’s MIRI filters were used to create the image and which visible-light colour is assigned to each filter. From left to right: F560W is blue; F770W is green; and F1000W is red.]

Centaurus A (NIRCam image)

Mon, 06 Jul 2026 16:00:00 +0200

This view of Centaurus A from the NASA/ESA/CSA James Webb Space Telescope if from the Near-Infrared Camera (NIRCam) Webb’s infrared vision exposes a warped disk of gas and dust left behind by a collision with another galaxy billions of years ago.

Centaurus A: ground-based context

Mon, 06 Jul 2026 16:00:00 +0200

This ground-based image of nearby galaxy Centaurus A from the European Southern Observatory (top left) puts the near-infrared and mid-infrared views from the NASA/ESA/CSA James Webb Space Telescope image into context.

[Image description: A three-panel comparison shows different views of galaxy Centaurus A. The upper left panel is a visible-light image of the full galaxy surrounded by a black sky filled with white, blue, and yellow stars. Centaurus A has a dark dust lane crossing a bright centre. A white outlined box marks the region observed by Webb. The upper right panel zooms into that outlined region with a combined near- and mid-infrared view from Webb. The galaxy is oriented diagonally, with a bright white core surrounded by an orange glow. A broad band of golden-orange dust forms a parallelogram across the centre, countless tiny stars create a fine speckled texture throughout the image. A dashed outline indicates the smaller region shown below, Webb’s mid-infrared view. The galaxy stretches horizontally across a black background scattered with purple and white stars, the parallelogram glows white. Wispy clouds and looping pink structures surround the centre. The galaxy’s edges fade into soft, feathery plumes.]

Centaurus A (annotated NIRCam + MIRI image)

Mon, 06 Jul 2026 16:00:00 +0200

Annotated image of the active galaxy Centaurus A captured by the James Webb Space Telescope’s Near-Infrared Camera (NIRCam) and Mid-Infrared Instrument (MIRI), with compass arrows, a scale bar, and colour key for reference.

The scale bar is labeled in light-years.

This image shows invisible near- and mid-infrared wavelengths of light that have been translated into visible-light colours. The colour key shows which NIRCam and MIRI filters were used when collecting the light. The colour of each filter name is the visible light colour used to represent the infrared light that passes through that filter.

[Image description: Annotated image of galaxy Centaurus A captured by Webb’s NIRCam (Near-Infrared Camera) and MIRI (Mid-Infrared Instrument), with compass arrows, a scale bar, and colour key for reference. A diagonal image of the galaxy stretches from the upper left to the lower right against a deep black background filled with tiny orange, blue, and white points of light. A band of golden-orange dust cuts across the middle of the galaxy, forming a distinctive parallelogram shape. Just above the centre, peach-coloured ribbons trace an S-shaped structure. The galaxy’s outer edges are reddish-orange. Below the image is a colour key showing which of Webb’s filters were used to create the image and the visible-light colour assigned. NIRCam filters, from left to right: F090W is blue, F187N is blue, F200W is cyan, F277W is yellow, F335M is orange, F444W is red. MIRI filters, from left to right: F560 is yellow, F770W is orange, F1000W is red.]

Centaurus A (MIRI image)

Mon, 06 Jul 2026 16:00:00 +0200

The NASA/ESA/CSA James Webb Space Telescope’s Mid-Infrared Instrument (MIRI) reveals the nearby galaxy Centaurus A, exposing the dusty structures and hidden activity that shape this unusual system. Webb’s infrared vision pierces thick lanes of dust that obscure much of the galaxy in visible light, unveiling intricate filaments, loops, and glowing clouds of warm dust stretching across its centre. At the heart of the galaxy, an actively feeding supermassive black hole shines brightly, surrounded by complex structures sculpted by a past galactic collision and ongoing activity.

[Image description: A horizontal image of the galaxy Centaurus A stretches across a black background filled with thousands of tiny purple, pink, and white points of light. The galaxy is brightest at its centre, where a brilliant white and pale pink glow radiates outward. Eight diffraction spikes extend from the central glow. Delicate loops and wispy ribbons of pink and lavender arc above and below the centre of the image in the shape of an ‘S’. A band of gray and white dust in the shape of a parallelogram cuts across the middle of the galaxy. Mottled patches and bright knots are scattered throughout the dusty band. The galaxy’s outer edges fade into soft, cloud-like plumes with feathery textures that stretch toward the left and right sides of the image. Against the surrounding darkness, a few bright foreground stars shine with Webb’s distinctive diffraction spikes, while countless fainter stars create a speckled backdrop.]

Centaurus A (MIRI + NIRCam image)

Mon, 06 Jul 2026 16:00:00 +0200

This combined view of Centaurus A from the NASA/ESA/CSA James Webb Space Telescope pairs observations from the Near-Infrared Camera (NIRCam) and Mid-Infrared Instrument (MIRI). Webb’s infrared vision exposes a warped disk of gas and dust left behind by a collision with another galaxy billions of years ago.

What may first appear as a grainy glow is actually a dense field of millions of individually resolved stars. By distinguishing different generations of stars embedded throughout the dusty centre, Webb gives astronomers new clues to the galaxy’s history and the processes that continue to shape it.

[Image description: A diagonal image of the galaxy Centaurus A stretches from the upper left to the lower right against a deep black background filled with countless tiny orange, blue, and white points of light. The galaxy is brightest at its centre with a white glowing core. A broad band of golden-orange dust cuts across the middle of the galaxy, forming a distinctive parallelogram shape. The dust in this feature is richly textured, with mottled patches, bright knots, and intricate filaments throughout. Just above the centre, delicate peach-coloured ribbons trace an S-shaped structure. Rather than appearing smooth, the galaxy has a finely speckled texture created by millions of individually resolved stars, which fill the central regions and extend into the surrounding glow. The galaxy’s outer edges dissolve into diffuse, cloud-like plumes with feathery textures that stretch beyond the dust lane. Against the surrounding darkness, several bright foreground stars display Webb’s distinctive diffraction spikes.]

Centaurus A (MIRI + NIRCam image wide-field view)

Mon, 06 Jul 2026 16:00:00 +0200

A cosmic construction project

Fri, 03 Jul 2026 10:00:00 +0200

In today’s Picture of the Month from the NASA/ESA/CSA James Webb Space Telescope we are taken on a visit to a building site of significant scale. The project is a galaxy cluster named MACS J0553.4-3342, located in the constellation Columba (the Dove).

MACS J0553.4-3342 is situated at a redshift of 0.412. Redshift is a measure of how much the cluster’s light has been stretched by the expansion of the Universe over the course of its long journey to Webb’s mirrors; this unassuming number tells us that we are seeing MACS J0553.4-3342 as it was 4.4 billion years in the past. But for a galaxy cluster, this is relatively young. In fact, observations with the NASA/ESA Hubble Space Telescope and other telescopes show a cluster still in the process of being built.

MACS J0553.4-3342 is composed of two sub-clusters — roughly equal in mass — that are actively merging. The two subclusters have already slammed through each other and travelled over one million light-years apart, but they will eventually come back together again and again until they finally merge. The construction process is messy, and MACS J0553.4-3342 is filled with extremely hot gas that radiates powerful X-rays. Each subcluster is anchored on an immensely bright and massive elliptical galaxy, which are easily identifiable as the two brightest points in the centre of this scene with the largest glowing halos around them. The many smaller white elliptical galaxies are bound to one of the two subclusters by gravity, and will be incorporated into the final galaxy cluster. This image also features many foreground galaxies — spirals and dusty discs that are unrelated to MACS J0553.4-3342 — and prominent bright stars in our own Milky Way galaxy.

Even mid-way through its construction, the titanic clumps of matter swirling around in this galaxy cluster have built a device that is already very useful for us here on Earth: a gravitational lens. The extreme and concentrated mass in MACS J0553.4-3342 curves light with its gravity, similar to how a glass lens bends and focuses light. In this image you can see prominent orange, stretched-out arcs alongside each of the subclusters. These arcs are images of distant background galaxies, whose light has been warped by the galaxy cluster’s gravitational pull. The arc on the left side, three bright spots joined together, is actually three images of a single background galaxy! A forest of smaller arcs and lines are scattered across the image too; such a fantastic view appears in few other places in the Universe.

Look in the right spot, however, and this galaxy cluster turns from a distorting funhouse mirror into a precision scientific device. The gravitational lensing focuses light, magnifying objects and enhancing their brightness so if they lie in exactly the right place, background galaxies and even individual stars that would have been far too faint and distant to spot will be made visible. By carefully mapping out the mass of the cluster, researchers can reconstruct where and how strongly it distorts light from our point of view, then search for serendipitously-magnified distant objects to study. The arcs we can see in MACS J0553.4-3342 already show a few galaxies from less than a billion years after the Big Bang.

This image, taken with Webb’s Near-Infrared Camera (NIRCam), stems from a survey programme named VENUS (#6882). Astronomers aimed to create a collection of deep, high-quality images of massive galaxy clusters like MACS J0553.4-3342 across a wide range of infrared wavelengths, greatly expanding the area covered by Webb’s sensitive instruments. Researchers can then scour the clusters for distant and faint objects that have been brightened through gravitational lensing, from young galaxies and low-mass black holes to supernova explosions and individual stars. Gravitational lensing has been key to many of Webb’s most dramatic discoveries in recent years, and having many more examples of it allows us to systematically study the distant past and the evolutionary stages of the galaxies, stars and black holes we see today.

[Image Description: A galaxy cluster in deep space. It is filled with elliptical galaxies: small, bright white glowing ovals. The two largest elliptical galaxies, left and right of center, are bright cores that radiate light. Unrelated, distant galaxies are scattered around as red smudges and dots.Many of these are stretched out into red arcs and lines by the galaxy cluster’s strong gravity, creating multiple images in places. Numerous spiral galaxies and bright stars appear in the foreground.]

FS Tau (Webb NIRCam image)

Thu, 02 Jul 2026 16:00:00 +0200

The NASA/ESA/CSA James Webb Space Telescope captures the infrared light from bright protostars in the young star system FS Tau.

In addition to myriad background galaxies that burst into view, this image flickers with a number of protostars, or baby stars that are formed from dense pockets of gas and dust. These hot, clumpy, and low-mass objects eventually will become full-fledged stars capable of burning hydrogen in their cores, like our Sun. The protostars of FS Tau are about 1 to 3 million years old, which is relatively young in cosmic scales. Our Sun, by contrast, is 4.6 billion years old.

FS Tau A, a pair of protostars that creates the largest diffraction pattern slightly to the left of centre, is about half the mass of our Sun. FS Tau B, the orange protostar slightly right of centre, is thought to be responsible for the red (molecular hydrogen) and orange (soot-like molecules known as polycyclic aromatic hydrocarbons) outflows that we see amid the dusty region. The blue ridges are areas where light has been scattered by dust.

The different colours of the background galaxies indicate how much dust is in front of them, as dust both absorbs and scatters light. Redder galaxies lie behind larger amounts of dust, yellower galaxies lie behind thinner layers of dust, and whiter galaxies are mostly unobstructed.

You can learn more about this image here.

[Image description: FS Tau, a star-forming nebula. Clouds of transparent blue and purple gas and dust extend from slightly left of centre to the right side of the frame, from 2 o’clock to 5 o’clock. Several yellow and white protostars, some showing Webb’s eight-pronged diffraction pattern are dispersed throughout the clouds. Orange wisps and filaments of gas extend from one of the protostars at the centre toward the top left and bottom right corners of the frame. There are numerous, distant yellow and white galaxies strewn about the black background of space.]

Exoplanet WD 1856 b (artist’s concept)

Wed, 01 Jul 2026 17:00:00 +0200

Exoplanet WD 1856 b, shown in this artist’s concept, is a gas giant that survived the death of its star. It now orbits a white dwarf at a distance 50 times closer than Earth orbits the Sun. Observations by the NASA/ESA/CSA James Webb Space Telescope not only determined the planet’s temperature but also detected molecules in its atmosphere. The former measurement provides evidence that WD 1856 b migrated to its current location billions of years after its star became a white dwarf.

[Image description: An orange gas giant planet at left, taking up about one-third of the frame, facing a star, which appears at top right as a far smaller bright dot. The planet has subtle orange cloud bands. The star illuminates the right side of the planet like the crescent of a waxing moon. Both are on the black background of space. The words “artist’s concept” are in the bottom right corner.]

Exoplanet WD 1856 b NIRSpec transmission spectrum

Wed, 01 Jul 2026 17:00:00 +0200

The NASA/ESA/CSA James Webb Space Telescope measured the constituents of exoplanet WD 1856 b as it passed in front of its star, finding signs of methane. WD 1856 b orbits a white dwarf star the size of Earth. As a result, the planet blocks more than half of the star’s light. The red bands indicate where bumps in the spectrum show that this planet’s atmosphere contains methane.

[Image description: This image shows a graph of the amount of light blocked by percent on the y-axis and wavelength of light in microns on the x-axis. The y-axis ranges from 55.2% to 56.5% with tick marks every 0.1% and labels at 55.5 and 56.0. The x-axis ranges from 0.5 to 4.0 microns with tick marks every 0.5 microns. A thick purple line outlined with two semi-translucent bands has an inner line that’s darker and an outer line that’s lighter. The purple line is wavy and runs higher, in the top third, until about 3.5 microns, where it drops to 55.2 on the y-axis and 4.0 on the x-axis. Five humps are highlighted by vertical red bars, indicating the presence of methane. White circles representing data points are scattered above and below the purple line. A key shows that the purple line is the best fit model, red highlights methane, and white circles represent data..]

The Cigar Galaxy: M82 (Webb NIRCam image)

Tue, 23 Jun 2026 16:00:00 +0200

The NASA/ESA/CSA James Webb Space Telescope recently observed edge-on starburst galaxy Messier 82 (M82), nicknamed the Cigar Galaxy. Webb’s near-infrared-light view is a snapshot in time, revealing a scene that has been evolving over a couple hundred million years. In near-infrared light, astronomers can see the galaxy’s distended disc structure and millions of individual stars (approximately 16.5 million) for the first time.

Webb’s imaging survey of the galaxy is helping astronomers investigate the formation history of M82 and will also shed light on the current processes occurring within the starburst galaxy.

[Image description: Edge-on spiral starburst galaxy Messier 82 as imaged by Webb. Hourglass-shaped red-orange plumes of material are shooting outward from above and below a bright blue-white, disc-shaped centre. Messier 82 is set against the black background of space, which has many distant galaxies that appear as small white and orange spirals, ovals, and points of light. Toward the right of Messier 82 is a blue-white star with eight-pointed diffraction spikes that are characteristic of Webb.]

The Cigar Galaxy: M82 (Hubble and Webb)

Tue, 23 Jun 2026 16:00:00 +0200

Edge-on spiral galaxy Messier 82 (M82) has been an object of study by many observatories over the years, including the NASA/ESA Hubble Space Telescope and most recently the NASA/ESA/CSA James Webb Space Telescope.

This side-by-side comparison shows the same region of M82 as seen by Hubble (left) and Webb (right). Hubble’s visible-light view is limited because of the amount of dust within M82, which shrouds the galaxy’s details. Bright, bluish light radiating from the centre is due to star formation. A notable thick lane of dust, black in the centre and red around the edges, diagonally stretches across the scene. Thinner strands and clumps of reddish dust cover the majority of the view.

With its ability to observe the near-infrared Universe, Webb can pierce through the dusty environment of M82 and reveal what was once hidden to astronomers. With Webb, millions of individual stars within M82’s heart (seen here as luminous blue-white granules) are resolved in unprecedented clarity. Red-orange clumps, most noticeable toward the right, are small dust grains.

[Image description: A side-by-side comparison of a portion of starburst galaxy Messier 82 (M82) as seen by Hubble (left) and Webb (right). The left image is labeled “Hubble” and the right image is labeled “Webb.” Hubble’s visible-light view at left shows bright, bluish light radiating from the centre and a thick lane of dust, black in the centre and red around the edges, diagonally stretching across the scene. Thinner strands and clumps of reddish dust cover the majority of the view. Webb’s infrared-light view at right shows a dense area of stars, depicted as luminous blue-white grains, against the black background of space. Toward the right side is clumpy red material, which is most visible toward the top right corner.]

The Cigar Galaxy: M82 (Webb and Hubble image)

Tue, 23 Jun 2026 16:00:00 +0200

The NASA/ESA/CSA James Webb Space Telescope’s recently observed edge-on starburst galaxy Messier 82 (M82), nicknamed the Cigar Galaxy. Webb’s near-infrared-light view is a snapshot in time, revealing a scene that has been evolving over a couple hundred million years. In near-infrared light, astronomers can see the galaxy’s distended disc structure and millions of individual stars — approximately 16.5 million — for the first time.

Depicted as luminous blue granules, these stars are only a small portion of the total amount astronomers think reside in a galaxy like M82. The extreme star formation occurring within M82, which will eventually cause star formation to cease in the future, is causing bipolar plumes of material to be ejected above and below the galaxy’s disc.

Yellow tendrils of material closest to the galaxy’s disc represent ionised gas, and the orange material farther away depicts small dust grains. These grains are called polycyclic aromatic hydrocarbons and are helpful in tracing material in the space between the galaxy’s stars — also known as the interstellar medium.

Webb’s detailed observation of the galaxy, specifically of the main plane of the disc, is aiding astronomers as they seek to uncover the formation history of M82. The telescope data will also help scientists understand the current processes occurring within the starburst galaxy.

[Image description: Composite image of edge-on spiral starburst galaxy Messier 82 as observed by Webb and Hubble. Hourglass-shaped plumes of gas are shooting outward from above and below a bright blue-white, disc-shaped centre. The plumes are yellow near the galaxy’s bright centre, denoting areas of ionised hydrogen gas as observed by Hubble, and gradually become redder as you move farther away. Messier 82 is set against the black background of space, which has many distant galaxies that appear as small white and orange spirals, ovals, and points of light. Toward the right of Messier 82 is a blue-white star with eight-pointed diffraction spikes that are characteristic of Webb.]

The Cigar Galaxy: M82 (Webb and Hubble image, annotated)

Tue, 23 Jun 2026 16:00:00 +0200

Annotated image of the starburst galaxy Messier 82 captured by the NASA/ESA/CSA James Webb Space Telescope’s NIRCam (Near-Infrared Camera) and the NASA/ESA Hubble Space Telescope’s ACS/WFC instruments, with compass arrows, a scale bar, and colour key for reference.

The scale bar is labeled in light-years.

This image shows invisible near-infrared and visible-light wavelengths of light that have been translated into visible-light colours. The colour key shows which NIRCam and ACS/WFC filters were used when collecting the light. The colour of each filter name is the visible light colour used to represent the infrared light that passes through that filter.

[Image description: Annotated image of starburst galaxy Messier 82 captured by Webb’s NIRCam (Near-Infrared Camera) instrument, with compass arrows, a scale bar, and colour key for reference. Hourglass-shaped red-orange plumes of material are shooting outward from above and below a bright blue-white, disc-shaped centre. Messier 82 is set against the black background of space, which has many distant galaxies that appear as small white and orange spirals, ovals, and points of light. Toward the right of Messier 82 is a blue-white star with eight-pointed diffraction spikes that are characteristic of Webb. Below the image is a colour key showing which of Webb’s NIRCam and Hubble’s ACS/WFC filters were used to create the image and which visible-light colour is assigned to each filter. From left to right, NIRCam filters are: F115W is blue; F200W is light blue; F335M is orange, and F444W is red. ACS/WFC filter F658N is yellow.]

ESAWebb Images

IRS 3 Field (NIRCam and MIRI image)

IRS 3 Field (MIRI image)

Star IRS 3 (close-up NIRCam image)

Location of star IRS 3

Location of star IRS 3

IRS 3 Field (NIRCam image)

Lion Nebula (MIRI image)

Lion Nebula (NIRCam + MIRI image)

Webb opens a Treasure Chest filled with stars

Links

Beta Pictoris system (NIRSpec IFU image and spectrum)

Centaurus A (annotated MIRI image)

Centaurus A (NIRCam image)

Centaurus A: ground-based context

Centaurus A (annotated NIRCam + MIRI image)

Centaurus A (MIRI image)

Centaurus A (MIRI + NIRCam image)

Centaurus A (MIRI + NIRCam image wide-field view)

A cosmic construction project

Links

FS Tau (Webb NIRCam image)

Exoplanet WD 1856 b (artist’s concept)

Exoplanet WD 1856 b NIRSpec transmission spectrum

The Cigar Galaxy: M82 (Webb NIRCam image)

The Cigar Galaxy: M82 (Hubble and Webb)

The Cigar Galaxy: M82 (Webb and Hubble image)

The Cigar Galaxy: M82 (Webb and Hubble image, annotated)