AstrotalkUK – Amateur astronomy in the UK

A man playing golf on the moon is one of the images permanently etched into the collective memory of humanity’s first exploration of the moon. The so called “golf player” was Alan Shepard the guy with him was Dr Edgar Mitchell whilst Stuart Roosa orbited the moon in the command module. Today, Ed Mitchell, two months away from his 80^th birthday is the only remaining member of the Apollo 14 crew.

On a recent visit to Pontefract, organised once again by Ken Willoughby, he describes his personal journey to the moon. Amongst other things he highlights his javelin throw which, by a narrow margin, beat the golf ball, as a picture in his presentation illustrates. He spent nine hours on the surface of the moon during two EVAs on February 5^th and 6^th 1971. Apollo 14 was his only space flight and he left NASA in the following year.

Ed Mitchell is perhaps best known for his epiphany moment on the return journey to Earth when he experienced a unique spiritual sensation which has dominated his professional and personal life ever since. To help understand it, he left NASA and establish the Institute of Noetic Sciences. Over the last few years he has frequently spoken publicly about his interest in the paranormal, ESP and UFOs. He asserts that the Roswell incident was real, aliens have landed on the Earth and the US military is responsible for a cover-up.

It is strange that someone (a navy pilot and an Apollo astronaut) with a professional life dominated by leading edge science and technology can hold such an unscientific position. He appears oblivious to the contradiction in referring to himself as an astrophysicist and yet accepting Fred Hoyle’s Steady State explanation of cosmology, for which there is little evidence, over the Big Bang. I wonder how he explains Hubble’s law and the expansion of space, Cosmic microwave background radiation and the relative abundance of primordial elements.

I really should have asked him. I did not in part out of deference. Despite his age and unusual views, he remains a member of a unique group of individuals with a special contribution to human history. Who knows, he may well turn out to be right. In the meantime, the main road of science, directed by the sign posts of  observational evidence, is probably still the  best path to a more accurate understanding of the cosmos.

Dr Mitchell was kind enough to share his power point slides which I have incorporated into the hour long video presentation. Links to that presentation and a video version of this episode below.

====================================

An increasingly familiar quote from someone else who made a huge contribution to how we should go about understanding the cosmos. Carl Sagan.

“I believe that the extraordinary should be pursued. But extraordinary claims require extraordinary evidence” .

 

 Episode 35 Dr Edgar Mitchell Apollo 14 [17:16m]: Play Now | Play in Popup | Download

Episode 35 – Video (10 minutes)

Dr Edgar Mitchell 2nd July 2010 from AstrotalkUK on Vimeo.

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

As episode 21 indicated, the power of science fiction to motivate the imagination is perhaps as strong as science itself.

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.

 

 Episode22 [33:01m]: 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

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. 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.

 

 episode18 [16:36m]: 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.

Nigel Henbest – Science Writer from gurbir on Vimeo.

 

 episode16 [31:00m]: Play Now | Play in Popup | Download

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:(

 

 episode15 [31:01m]: Play Now | Play in Popup | Download

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

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

Its that time of year. Summer time has arrived but not yet.. the summer. Local astronomical societies all over the country are winding down from the previous season and preparing for the next. In today’s episode a little more about two individuals who have been on the speaker list for many astronomical societies. Martin Lunn from Aurora Books and Andy Lound from Odyssey Class Dramatic lectures.

 

 episode11 [27:55m]: Play Now | Play in Popup | Download

Profile #1: First of occasional episodes profiling individuals who have made a unique contribution in amateur astronomy. In this episode three diverse individuals. Ken Willoughby from West Yorkshire Astronomical Society bringing Apollo astronauts to Pontefract. Astronomy Now’s Mark Armstrong supernova discoverer and Chris Marriott of Skymap.

 

 Episode 7 : Profile #1 [27:20m]: Play Now | Play in Popup | Download