AstrotalkUK

Not for profit website/blog on astronomy, space and my writing

Episode18:European Space Agency

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Since the days of Sputnik and Apollo, Space technology has matured to an extent that it is almost a routine commercial activity. China, India and Japan are well established players in addition to USA and Russia. Next year the Virgin Galactic will embark on space tourism. Since its establishment in 1975, the European Space Agency ( ESA) has come a long way. The original 10 founding member countries have now grown to 17 with a broad mission to “Explore Space”. All member countries are European as you would expect – except one. With the same disregard for geography that allows Israel to join the Eurovision song contest, Canada also plays a part in ESA.

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.

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Thanks to the guys at space.co.uk (Paul and Martyn) and Cy from speed-of-light.co.uk for the following video.  

Episode16:Astronomy – A cultural perspective

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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.

Nigel Henbest – Science Writer from gurbir on Vimeo.

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Episode15:Astrobiology. How did life start on Earth?

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Astrobiology is the study of life outside the earth. Paradoxically, it is advanced by understanding how life started here on earth. More about Astrobiology in the UK at the Astrobiology Society’s website.

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:(

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Episode14:Titan

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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.

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