Űrrepülés

What are these strange space globs? Situated in rich star fields and glowing hydrogen gas, these…

Tue, 26 May 2026 10:42:57 +0200

What are these strange space globs? Situated in rich star fields and glowing hydrogen gas, these opaque clouds of interstellar dust and gas are so large they might be able to form stars. Their home is known as IC 2944, a bright stellar nursery located about 7,600 light years away toward the constellation of the Centaur (Centaurus).
Image Credit: John Hayes

Starship flight 12 másfél óra múlva (01:30 AM)

Thu, 21 May 2026 23:57:46 +0200

Starship flight 12 másfél óra múlva (01:30 AM)

apod: 2026 May 1 Markarian’s Chain Image Credit &...

Sun, 03 May 2026 13:55:11 +0200

apod:

2026 May 1

Markarian’s Chain
Image Credit & Copyright: Chuck Ayoub

Explanation: Near the heart of the Virgo Galaxy Cluster, a string of galaxies known as Markarian’s Chain stretches across this telescopic field of view. Anchored in the frame at bottom right by prominent lenticular galaxies, M84 (bottom) and M86, you can follow the chain’s gentle arc up and toward the left. Near center you’ll spot the pair of interacting galaxies NGC 4438 and NGC 4435, known to some as Markarian’s Eyes. An estimated 50 million light-years distant, the Virgo Cluster itself is the nearest galaxy cluster. With up to about 2,000 member galaxies, it has a noticeable gravitational influence on our own Local Group of Galaxies. Within the Virgo Cluster at least seven galaxies in Markarian’s Chain appear to move coherently, while others may appear to be part of the chain by chance.

∞ Source: apod.nasa.gov/apod/ap260501.html

Évtizedek óta az első fotó a Napról

Thu, 09 Apr 2026 09:42:36 +0200

kiforditom-szetszedem:

ami az ózdi Elek Imre Csillagvizsgálóból készült, igaz, még felújítás alatt, meg egy Dwarf minivel, de a tevékenységeket elkezdtük :) 2026.04.03

A hűtést radiátorokkal csinálják fyi.

Tue, 31 Mar 2026 11:36:37 +0200

rendszervaltasgazda:

kgyst:
sztupy:
AI data centres can warm surrounding areas by up to 9.1°C
They discovered that land surface temperatures increased by an average of 2°C (3.6°F) in the months after an AI data centre started operations. In the most extreme cases, the increase in temperature was 9.1°C (16.4°F).
The effect wasn’t limited to the immediate surroundings of the data centres: the team found increased temperatures up to 10 kilometres away. Seven kilometres away, there was only a 30 per cent reduction in the intensity.
This is fine
Aggodalomra semmi ok, Musk papa elkezdi kiköltöztetni őket a Föld körüli pályára, illetve a gyártást a Holdra.
ez(ek?) már tényleg csak azért akarnak mindent is a Föld körüli pályára állitani, hogy más már ne tudjon labdába rúgni ilyen ötletekkel, pedig bármi másnak több értelme van (including üresen hagyni száz évig).
Pro primo, vákuumban nincs hűtés

A hűtést radiátorokkal csinálják fyi.

A Föld körüli pálya meg egyébként zseniális, mert azt az 1 Terawattot egy kb. Budapest méretű napelemfelülettel össze lehet hozni, nap mindig süt, felhők nincsenek, és nincsenek kötözködő engedélyező hatóságok sem. Megfelelő (terminátor feletti napszinkron) pálya esetében még mozgatni se kell a napelemeket. Mire létrehoznák a szabályozást, kész lesz a rendszer.

Musk védelmében annyit, hogy mindenki mással szemben ő törődik az űr-környezetvédelemmel, a legfelső fokozatokat és a bekrepált holdakat visszalépteti a sűrű légkörbe.

Wed, 18 Mar 2026 16:58:05 +0100

otthonzulles:

orulunkvincent:
budapest77-hu:
khazaiargos:
droidzombi:
a-silly-poll-side-blog-yay:
you’re permanently stuck in the last show that you watched, how is it going?
good
bad
great
awful
results
See Results
Két jégkorong játékos fog leápolni óránként kétszer.
Be vagyok zárva a Svábhegyi csillagvizsgálóba egy Élő csillagászat Kiss Lászlóval epizódba.
Bánom is én, majd ti jöttök fel hozzám.

A massive galaxy known as LEDA 1313424. It is 2.5 times bigger than the Milky Way & is known as a…

Mon, 16 Mar 2026 06:45:10 +0100

spaceexp:

A massive galaxy known as LEDA 1313424. It is 2.5 times bigger than the Milky Way & is known as a collisional ring galaxy, having nine rings confirmed by telescope observations, rippling from its center caused by another galaxy passing through it. Image spans about 530,000 light-years.

apod: 2026 March 11 CG 4: The Globule and the Galaxy Image...

Mon, 16 Mar 2026 06:44:13 +0100

apod:

2026 March 11

CG 4: The Globule and the Galaxy
Image Credit & Copyright: William Vrbasso
Text: Cecilia Chirenti (NASA GSFC, UMCP, CRESST II)

Explanation: Is this a cosmic monster ready to devour an unsuspecting galaxy? Thankfully, that is not the case. The red “monster” shown in the featured image is Cometary Globule CG 4, 1,300 light-years away in the Constellation Puppis. CG 4 is a molecular cloud, where hydrogen becomes cold enough to form molecules that can be brought together by gravity to create stars. The shape of CG 4 resembles that of a comet, but its head is 1.5 light-year in diameter and its tail is 8 light-years long; for comparison, the distance from the Earth to the sun is only 8 light-minutes. Astronomers believe that the tail of a cometary globule could have been shaped by a nearby supernova explosion or by irradiation from hot, massive stars. Indeed, CG 4 and other nearby globules point away from the Vela Supernova Remnant, at the center of the Gum Nebula. The edge-on spiral galaxy, ESO 257-19, is more than a hundred million light-years beyond CG 4, and is completely safe from the “monster”.

∞ Source: apod.nasa.gov/apod/ap260311.html

Ugyanaz

Ajándék galaxissal

Mon, 16 Mar 2026 06:43:36 +0100

the-wolf-and-moon:

CG 4, Hand of Angels

Ajándék galaxissal

Fewer and fewer people have regular access to a truly dark night sky. Where to find the last…

Fri, 19 Dec 2025 14:27:24 +0100

mapsontheweb:

Fewer and fewer people have regular access to a truly dark night sky. Where to find the last pristine skies in the US?

A Musk védelmében legyen mondva, a Startlink holdaknál figyelnek arra, hogy ne látszódjanak és ennek…

Wed, 17 Dec 2025 21:41:47 +0100

megolazunalom:

rafeeen1:
Üstökös kereszttűzben
2025.10.25. - Derült estéken napnyugta után kicsivel, amikor az első csillagok előbújnak, akkor lehet látni UFO-kat az égen. Ami villog és mozog, az lesz a repülő, ami gyorsan mozog, nagyon gyorsan az a hullócsillag.
A lassan mozgó fénypontok viszont műholdak lesznek, melyekből mostanra már 14000 darab van az égen. Azért látszódnak “mozgó csillagoknak”, mert a Nap fénye megvilágítja őket horizont alól.
A műholdak serege kifezetten zavaró tud lenni bizonyos fotóknál, de leginkább a szakcsillagászati felvételeken. A hobbi célból készített asztrofotókon az átlagolással el lehet tüntetni a nyomokat, de egy képen viszont ott fognak maradni.
A műholdakra nagy szükségünk van a mindennapi életünkben, ám az égbolt nyugodt látványa a sorozatfelvételeken és az asztrotájképeken már a múlté.
/
Comet in crossfire
On clear evenings a little after sunset, when the first stars appear, you can see UFOs in the sky. What flashes and moves becomes the plane, what moves quickly, very quickly, is the shooting star.
The slowly moving points of light, on the other hand, will be satellites, of which there are already 14,000 in the sky. They look like “moving stars” because the light of the Sun illuminates them from below the horizon.
The army of satellites can be particularly confusing for certain photos, but mostly for professional astronomy shots. In astrophotos taken for hobby purposes, the traces can be removed by averaging, but they will remain there in a single image.
We need satellites in our everyday life, but the calm view of the sky in bursts and astroscapes is already a thing of the past.
na, ez brutál! a műholdakra szükség van, de hogy már a sokadik cég küldi fel a sokezer darabból álló flottáját, arra szerintem nincs igazán szükség.

A Musk védelmében legyen mondva, a Startlink holdaknál figyelnek arra, hogy ne látszódjanak és ennek már van is hatása, mert nem látszódnak. (Az új sorozatoknál tervezési szempont, hogy ne verje vissza a napfényt, kb. sötétre van festve ill. mindig úgy pozícionálják, hogy a fényt ne verje a Föld felé. AFAIK Musk az egyetlen, aki gondol erre, vagy legalábbis ő volt az első. Az meg egy másik kérdés, hogy ez se fog sokáig tartani, mert a Starshipeknél ez már nem lesz opció.)

Voyager 1 Is About to Reach One Light-day from Earth

Mon, 15 Dec 2025 16:33:42 +0100

spaceexp:

Voyager 1 Is About to Reach One Light-day from Earth
After nearly 50 years in space, NASA’s Voyager 1 is about to hit a historic milestone. By November 15, 2026, it will be 16.1 billion miles (25.9 billion km) away, meaning a radio signal will take a full 24 hours — a full light-day — to reach it.

The danger of large habitats in space like Starship: it’s possible to get stuck floating if you…

Mon, 15 Dec 2025 16:32:33 +0100

spaceexp:

The danger of large habitats in space like Starship: it’s possible to get stuck floating if you can’t touch anything to push off of.
Video of an experiment done on ISS back in 2008.

Őőő egyébként nem értem, mit nem értenek.

Tue, 09 Dec 2025 22:57:52 +0100

odmnd:

raychleadele:
teathattast:
teathattast:
Wake up babe new unexplainable horrors dropped
What horrors? The JuMBOs are clearly friends.
Anything but the metric system.

Őőő egyébként nem értem, mit nem értenek.

First landing attempt of the Zhuque-3 rocket ending in a fireball

Sun, 07 Dec 2025 21:40:19 +0100

spaceexp:

First landing attempt of the Zhuque-3 rocket ending in a fireball

apod: 2025 December 4 Galaxies in the Furnace Image Credit...

Sun, 07 Dec 2025 21:39:29 +0100

apod:

2025 December 4

Galaxies in the Furnace
Image Credit & Copyright: Simone Curzi and the ShaRA Team

Explanation: An example of violence on a cosmic scale, enormous elliptical galaxy NGC 1316 lies about 75 million light-years away toward Fornax, the southern constellation of the Furnace. Investigating the startling sight, astronomers suspect the giant galaxy of colliding with smaller neighbor NGC 1317 seen just right of the large galaxy’s center, producing far flung star streams in loops and shells. Light from their close encounter would have reached Earth some 100 million years ago. In the sharp telescopic image , the central regions of NGC 1316 and NGC 1317 appear separated by over 100,000 light-years. Complex dust lanes visible within also indicate that NGC 1316 is itself the result of a merger of galaxies in the distant past. Found on the outskirts of the Fornax galaxy cluster, NGC 1316 is known as Fornax A. One of the visually brightest of the Fornax cluster galaxies it is one of the strongest and largest celestial radio sources with radio emission extending well beyond this one degree wide field-of-view.

∞ Source: apod.nasa.gov/apod/ap251204.html

Ez erős kontent

Wed, 03 Dec 2025 00:16:26 +0100

cosmonautroger:

galaxies collision

Ez erős kontent

Fri, 28 Nov 2025 21:17:52 +0100

Hát ez elég szokatlan, az állítás szerint bekrepált az egyetlen olyan indítóállás, amiről emberes Szojuz rakétákat lehet indítani.

via NAFO Hungary

Spiral galaxy NGC 1055 is a dominant member of a small galaxy group a mere 60 million light-years…

Fri, 28 Nov 2025 17:52:18 +0100

wonders-of-the-cosmos:

Spiral galaxy NGC 1055 is a dominant member of a small galaxy group a mere 60 million light-years away toward the constellation Cetus.
Image Credit: John Hayes

apod: 2025 November 23 The Observable Universe Illustration...

Tue, 25 Nov 2025 14:22:53 +0100

apod:

2025 November 23

The Observable Universe
Illustration Credit & Licence: Wikipedia, Pablo Carlos Budassi

Explanation: How far can you see? Everything you can see, and everything you could possibly see, right now, assuming your eyes could detect all types of radiations around you – is the observable universe. In light, the farthest we can see comes from the cosmic microwave background, a time 13.8 billion years ago when the universe was opaque like thick fog. Some neutrinos and gravitational waves that surround us come from even farther out, but humanity does not yet have the technology to detect them. The featured image illustrates the observable universe on an increasingly compact scale, with the Earth and Sun at the center surrounded by our Solar System, nearby stars, nearby galaxies, distant galaxies, filaments of early matter, and the cosmic microwave background. Cosmologists typically assume that our observable universe is just the nearby part of a greater entity known as “the universe” where the same physics applies. However, there are several lines of popular but speculative reasoning that assert that even our universe is part of a greater multiverse where either different physical constants occur, different physical laws apply, higher dimensions operate, or slightly different-by-chance versions of our standard universe exist.

∞ Source: apod.nasa.gov/apod/ap251123.html

PS nyilván új dolog, de a Wikipedia és a Wikimedia Commons nem ugyanaz.

Jójó, az APOD még csak olyan 30 éves a WC meg csak 20, ennyi idő alatt nem ülepszik le a tudás.