AstrotalkUK – Amateur astronomy in the UK

If you had the task of gathering all of humanity’s knowledge of cosmology in one place, how would you do it? Answers to questions such as, How big is the Earth? At what date and time will the Moon be full again? What makes the Sun shine? How old is the Universe? Today a good place to start the project would be to scour the sources online. In about 150AD Claudius Ptolemaeus, better known as Ptolemy, a Greek national with Roman citizenship living in Egypt, attempted to do just that. He is best known for his encyclopaedic work written in ancient Greek “Syntaxis Mathematica”, perhaps better known as the Almagest from the Arabic Al magisti “the greatest”. He was an industrious author of many scientific and mathematical treaties but he also collected works going back hundreds of years.

The Almagest was the premier source of knowledge for describing the cosmos for almost two thousand years. Nothing of the original survives, only hand written copies of hand written copies.

Today’s episode is partially about one such copy, A seven hundred year old manuscript identified recently in the special collections of the Brotherton Library in the University of Leeds. Only parts of it is the Almagest. This episode is also about how information is transmitted through history. The value that successive individuals, societies and civilisations put on them. The inevitable errors in the mishmash of translations over hundreds of years from one language (Ancient Greek, Syriac, Arabic, Latin and English) to another or the periodic attempts by one scribe to diligently copy the work of another. In early 2009 Dr Regine May and Professor Malcolm Heath came across a 14^th century manuscript catalogued as a work of Astrology and discovered it contained elements of Ptolemy’s Almagest. The manuscript in three volumes has yet to receive detailed  scholarly scrutiny.

In today’s episode there are 4 contributors.  Dr Regine May outlines how the almost accidental discovery of this manuscript came about and Dr Oliver Pickering, the keeper of the special collections describes how the library acquired the manuscript. A live recording of Professor Malcolm Heath, Dr Allan Chapman and Dr Oliver Pickering inspecting the manuscript in the Brotherton Library.

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Friedrich Nietzsche was a German philosopher of the late 19th century who read and wrote about the ancient Greek culture. Perhaps it was the writings from the ancient Greek civilisation which lead him to conclude The future influences the present just as much as the past.

 

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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

 

 antikythera Mechanism [25:37m]: Play Now | Play in Popup | Download

 

 Tony Freeth: Play Now | Play in Popup | Download

Science is the product of human intellect, creativity and imagination. It helps answers the profoundest of all questions. Where did life come from? How old is the Earth? What is the structure of the universe? How did humans come to be? As the history of science shows, as it progresses so does the nature, accuracy and reliability the answers to such questions. The scientific picture of the physical world is a provisional and an ever changing one.

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.

 

 Science and religion [32:01m]: Play Now | Play in Popup | Download

Chris Lord  of Blackpool & District Astronomical Society continues the story of the telescope leading up to its use by Galileo for astronomical observations.

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.

 

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Hans Lipperhey’s patent application in the Netherlands for a telescope was formally denied on 2nd October 1608. Nonetheless, it is that individual, that place and that date which history associates with the invention of the telescope. Most of us are aware of the fundamental astronomical discoveries Galileo went on to make with it in the following year but could they have been made earlier?

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.

 

 episode23 [16:58m]: Play Now | Play in Popup | Download

Professor Mark Brake from the University of Glamorgan has an eclectic interest. An academic, broadcaster and author of science and popular science books, he is the organising chair for the the third conference of the Astrobiology Society of Britain: ASB3: The Living Universe, will take place in Cardiff between July 1-4, 2008. We spoke about the relationship between science & science fiction and astrobiology.

 

 episode21 [19:11m]: Play Now | Play in Popup | Download

You can’t think of Darwin without Wallace, Laurel without Hardy. In UK astronomy there is no more an enduring and familiar partnership than Henbest and Couper. Nigel and Heather have been writing, broadcasting, supporting and publicising astronomy for decades.

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.

 

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After a 7 year journey, Cassini/ Huygens arrived at Saturn in 2004 and Huygens landed on the surface of Titan on January 14th 2005. The only moon within the solar system known to have a substantial atmosphere.

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.

 

 Titan occultation 28 sgr: Play Now | Play in Popup | Download

 

 episode14 [27:32m]: Play Now | Play in Popup | Download

You may have seen the report from the British UK Space Exploration Working Group suggesting that Britain can get two British Astronauts to the Space station costing less than £75m over 5 years by commercially engaging the Russian Soyuz program rather than the annual £60m cost of going with ESA, or indeed developing a British launch capability.

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.

 

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Next year marks the 40th anniversary of Apollo 11 landing in the Sea of Tranquillity on the moon. In today’s episode – assistant director & co-producer Chris Riley talks about the recent film “In the Shadow of the Moon” which recounts that period and someone who was a part of it – astronaut Buzz Aldrin on his interest in Astronomy.

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

 

 Episode12 [28:40m]: Play Now | Play in Popup | Download

 

 Astronaut Buzz Aldrin: Play Now | Play in Popup | Download

The veteran BBC aerospace correspondent Reg Turnill recalls some of the key moments that he personally covered during the height of the space race. Reg has recorded his eye witness account in his book The Moonlandings.

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.

 

 Episode10:Astronomy and Space Broadcasters [25:46m]: Play Now | Play in Popup | Download

Amateur Astronomy in the 21st Century: Will Comet 17P Holmes brighten again? Is an asteroid heading for an impact on a Mars? Who was the founder of amateur astronomy? How amateur are amateur astronomers these days?

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.

 

 Episode 1 : Amateur Astronomy in the 21st Century [33:36m]: Play Now | Play in Popup | Download