A different, interesting and at times a little silly episode this week. 

Professor L Gay from the Southern University Edwardsville Illinois (SUEI) and Swinburne Astronomy Online but you will may be familiar with her voice on the probably most popular Astronomy podcast Astronomy Cast.

This recording was made in Oxford during her visit in March this year.

This week’s quote is from Anne Morrow Lindberg

“Good communication is as stimulating as black coffee, and just as hard to sleep after.”

Everyone who comes across the Antikythera mechanism goes through a phase initially of disbelief and then the awe inspiring realisation that something almost from another world actually exists in ours.

Imagine William Shakespeare writing Hamlet using a laptop. Surely a ridiculous proposition he was about 300 years too early for that. He didn’t but today’s topic is just as incredible but thanks to the presence of physical evidence- true.

The bronze department of the Museum in Athens has a small device slightly bigger than a pocket dictionary which has spent 2000 years under the Mediterranean Sea. Its is a hand made hand operated mechanical mechanism which may have looked like a multi handed clock. This remarkably compact device can display the calendar, predict eclipses, illustrate the phase of the moon, indicate the position of most of the planets and even takes account of the precession of the lunar orbit. The mechanism is driven by a collection of precision gear wheels made in Greece about 100 BC and nothing like it would be made again for at least another 1000 years.

My thanks to members of the Manchester Astronomical Society who arranged this visit for Tony Freeth to come and talk to them, and Conway Mothobi of the Manchester Metropolitan University hosting the event where this recording was made. My thanks of course to Tony Freeth for making the time on the day.

Videos on Youtube

• Michael Wrights’ working model
• Nature Video: Antikythera Mechanism Part 1
• Nature Video: Antikythera Mechanism Part 2
• X-Ray images of the Antikythera

Science is not the only way to understand the world and our place within it.  Majority of the time humans have existed most of them have been equally content and secure with different answers to the same fundamental questions. For them ancient holly texts provide unambiguous solutions. Science is not needed because it is not required.

The debate between science and religion is as intriguing and contentious today in the 21st century as it has always been. Science progresses by actively challenging its core tenants through the rational exercise of reason. On the other hand religious beliefs have divine origins, don’t require changing and are thus inherently stronger.

There are surprising large number of high profile scientist who are also committed to a particular faith. Perhaps they can shed some light on how they reconcile this apparent contradiction.

Dr Allan Chapman who is not a scientist but a historian of science and a practising Christian with a particular interest in the history of astronomy talks about science and religion.  He is the author of several books including biographies on Mary Summerville and Robert Hook. Perhaps he is better known  for  “Gods in the Sky”  and as the presenter the  of the three part series of the same name on channel4.

Ibn Sahl and Ibn al-Haythem were two scholars who during the 10th and 11th century developed the fundemental mathematical principles of refraction, reflection and dispersion and kick started the science of optics. Chris concludes this 2nd part at that point in history which marks the beginning of the telescope - Galileo’s profound astronomical discoveries in 1609.

Three thousand years ago, in what today is  Iraq , the  Nimrud lens now in the British Museum is clearly recognised as a lens. It probably could not have been used as part of an astronomical telescope but it is evidence that strongly indicates that lenses were in use long before Lipperhey and Galileo. The Pharos lighthouse in Alexandria is another illlustration of the advance understanding of optics in ancient times.

Chris Lord is an accomplished amateur astronomer and member of Blackpool & District Astronomical Society. He has recently completed a major piece of research in telescopes and optics to mark the International Year of Astronomy in 2009.

In this Episode, Chris talks about at the theory of vision, optics and the making and use of lenses during the almost two centuries from Euclid to Galileo.

1957 is known for the launch of Sputnik but it was also the year that the scientist Fred Hoyle published a science fiction novel called The Black Cloud. One of its readers in Italy would be inspired by it to  become an astronomer and embark on a career which involves the scientific study such clouds.

Professor Paola Caselli was that reader and since the autumn of 2007 has been the professor of Astronomy at the University of Leeds where Fred Hoyle had been a student. Her area of interest is the study of those regions of space of dust and gas (“dark clouds”) from which stars and planet eventually form.

Dust comes in many forms – cosmic, cometery and interplanetary dust which is responsible for the zodiacal dust we can see from Earth. Professor Caselli investigates cosmic dust grains (atoms or molecules of Silicon, Magnesium, Carbon and others) which act like magnets and help suck out the volatiles from a dust cloud in the early stages of star formation. Some of these process are probably taking place right now in the recently announced discovery of HL Tau and its associated proto planet HL Tau b.

She will be speaking on “From Interstellar Clouds to Planets: the Universal Factory“at the now famous, Leeds Astromeet on Saturday 15th November at the University of Leeds.

All of these take place in Liverpool as it celebrates its role as the 2008 European City of Culture. Infact, if you do see this in time and are close enough to Liverpool there is in interesting lecture this Thursday 17th June 18:30, Chadwick Lecture Theatre, University of Liverpool. Robert Fosbury, is talking about How Astronomers Image the Sky.

In today’s episode, three examples of how the web is being used to share resources and build communities around Science http://www.sciencefile.org Space http://www.space.co.uk and Astronomy http://www.fedastro.org.uk .

Many astronomical societies are preparing or have already completed a program of speakers for the 2008/9 season. If you are a member I would encourage you exploit one or better still all three resources featured in today’s episode to advertise you societies events. You will be surprised at the visitors who may turn up.

ESA has many projects active or in the pipeline and last month initiated an astronauts recruiting program. You have to be from one of the 17 member countries and you can even apply online. David Southwood is the ESA Director of Science. The following conversation with him was recorded at the Space conference. Incidentally thanks to the guys at space.co.uk (Paul and Martyn) and Cy from speed-of-light.co.uk, a video of this conversation is available here.

Its not an area of astronomy that amateurs usually dip even their big toe in and something entirely new for me. Talking jointly with a Dr Stella Bradbury and Dr Joachim Rose at the department of Physics was a little scary, but turned out to be extremely informative. They spoke about their work at many observatories, including Veritas Array. I spoke to them a couple of weeks ago and you will hear the reference to the launch of Gamma Ray Large Area Telescope (GLAST). That launch has been delayed to June 3rd.

For realtime GRB alerts see here.

Their most recent project is a series of daily radio programs for BBC Radio4 called Cosmic Quest and an associated book History of Astronomy which together chart the story of how human societies through history and around the globe have attempted to understand the universe and their place within it.

In the famous Miller Urey experiment to discover the origin of life, the experiment did not result in primitive life but succeeded in creating organic molecules from inorganic constituents. The starting point of the Miller and Urey experiments was the chemical composition of the early Earth’s atmosphere. Could meteorites also have given life a helping hand?

In today’s episode, Dr Terry Kee from the School of Chemistry at the University of Leeds talks about the key processes involving Phosphorus that may have been critical in kick-starting life on earth. The type of Phosphorus required for these processes is not found on the surface of the Earth today but is found in Iron meteorites. In a new collaborative project funded by £500,000 grant University of Leeds will investigate the beginning of life on Earth 3.8 billion years ago.

Sorry about the quality of the audio - the recording was made in Dr Kee’s office which apparently was much noisier than I remember:(

On Monday 3rd of July 1989 it was possible to study the atmosphere of Titan from here on Earth when it occulted a 5.8mag star 28 Sagittarius. Ken Irving from Salford Astronomical Society describes the observation he made and video recording of the unexpected central flash. Available below.

Using data from the onboard Acoustic Sensor Unit, the Planetary Society compressed Huygens two and half hour descent into a 10 second audio clip.

After landing, Huygens continued to transmit data including those incredible pictures of the surface for another 70 minutes until the communication link to Earth - Cassini disappeared over the horizon. It would not come in range again for 40 days by when Huygens’ batteries were dead. There in its dark cold -180C deep freeze it remains. Probably intact. Professor John Zarnecki from the Open University who lead the Surface Science Package team talk a little about the achievements f the Cassini/Huygens mission.

The Astronomer Royal on the other hand insists that unmanned space research is the way to go. You get a heck of a lot more science for your money

Dave and Leslie Wright from the British Rocketry Oral History program (BROHP) reminisce about the early days when Britain had its own launch capability and the UK Space conference that they host each year.

Want to be a rocket Scientist? Well a new book from a rocket scientist Lucy Rogers may be a good start. Lucy is also the chairman of the Vectis Astronomical Society on the isle of Wight. Their website must be one of the most elaborate. Check it out but .. turn down the volume on your PC first.

A short written account of his visit including a lunch with him and his wife is here.

Chris Lintott one of the authors of Bang! and a co-presenters on Sky at Night far too young to have experienced the Apollo program personally, looks forward to the next manned mission to the moon. You have probably heard of Galaxy Zoo but did you know Galaxy Zoo 2 is in the pipeline too.

Emerging from the the industrial revolution in the 19th century Lancashire were two similar individuals who contributed to making large mirrors and large telescopes. James Naysmith and William Lassell.

]]> http://astrotalkuk.org/?feed=rss2&p=117 34:56 About 20 years after Galileo used the telescope for astronomy, William Crabtree and Jeremiah Horrocks used it to observe a transit of Venus in 1639. ... About 20 years after Galileo used the telescope for astronomy, William Crabtree and Jeremiah Horrocks used it to observe a transit of Venus in 1639. Carl Barry and Lilian Fletcher researched documented this unique event. If you missed it a 19mb video here. Former executive Paul Allen (Allen Telescope Array) from Microsoft and Wayne Rosing (LSST Observatory) from Google are modern examples of private investors in space research. Emerging from the the industrial revolution in the 19th century Lancashire were two similar individuals who contributed to making large mirrors and large telescopes. James Naysmith and William Lassell. Uncategorized info@astrotalkuk.org no No http://astrotalkuk.org/?p=117http://www.astrotalkuk.org/wp-content/uploads/episode9.mp3 http://feedproxy.google.com/~r/astrotalkuk/~3/6hIKz9lXN5c/ http://astrotalkuk.org/?p=115#comments Sun, 23 Mar 2008 19:08:23 +0000 admin http://astrotalkuk.org/?p=115 The Astronomy Centre: If you head east out of the Lancashire town of Bacup along the A681 towards the Yorkshire town of Todmorden, a couple of miles up a snaking undulating road, nestled amongst the green hills, wild flowers and the sheep you see on your left two large astronomical domes. This is the home of the Astronomy Centre.

Founded by Peter Drew, it is the largest dedicated resource for the amatuer astronomers in the country. A not for profit venture, the astronomy centre has been developed and maintained by a diverse team of skilled, dedicated and industrious volunteers.

Roger Pickard, the president of the British Astronomical Association, recounts the days of committed amateurs who made the telescopes they used and asserts the ongoing strong relationship between amateur and professional astronomers.

This recording took place at Astrofest 2008, apologies for the occasional noisy background.

Jonathan Maron in his role as the marketing manager for astronomy cameras at The Imaging Source, describes some of the features of this relatively new source of cameras for astrophotography.

David Ratledge has been observing for decades and is one of the most experienced astrophotographers in the country. He is also the chairman of Bolton Astronomical Society and the editor of Digital Astrophotography - The State of the Art . I spoke to him, via the telephone so excuse the audio quality as he prepared retreat for quiet break .. and no doubt some astrophotraphy.

David Paul talks about the Campaign for Dark Skies which was established in 1989, what progress has been made and how the amateur astronomy community can still contribute.

Alison Gibbings describes what students do when not attending lectures, no they’re not in the pub. They have got themselves organised take a look at UKSEDS. The website does require an update though.

Nik Szymanek an accomplished astrophotographer shares his experiences of capturing some spectacular images. See some of them on his website.

Dr Allan Chapman talks about the tradition of amateur astronomy. He identifies some of the key figures from the past and speculates on its future. Read more about Allan on Wikipedia.

The very first episode of AstrotalkUK. A discussion between Tony O’Sullivan, Ken Irving, from Salford Astronomical Society and Chris Lord on the state of Amateur Astronomy in the 21st Century. More about Chris on his website at Brayebrook Observatory.
Links
Asteroid WD5 2007 heading for Mars?
MESSENGER’s revealing view of Mercury.