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Episode 103 -Observing the Solar System with the JWST

By Gurbir Dated: October 21, 2022 Leave a Comment

The James Webb Space Telescope has already wowed astronomers and the general public with some incredibly spectacular deep space images. But did you know, NASA has set aside a substantial number of hours for JWST to observe the objects in the solar system? What’s more that programme kicks in this autumn so some images of planets and their moons along with asteroids and comets will be published before the end of this year.

Dr Connr Nixon

A team of astronomers including planetary scientist Dr Connor Nixon will make use of the Guaranteed Time Observations (GTO) to observe the objects in the solar system from Mars and beyond. JWST cannot look towards the Sun so excludes the Earth, Venus or Mercury. The program is led by Dr. Heidi B. Hammel.

In this interview recorded in July during COSPAR2022 in Athens, Connor Nixon talks about the GTO and his role in it looking at Titan.

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Episode 96 Seti – The search so far with Jill Tarter

By Gurbir Dated: October 1, 2021 Leave a Comment

Allen Telescope Array. Source Seti.org

The Earth is one ordinary planet of many orbiting one typical sun of many in an unremarkable galaxy, the milky way one of the countless numbers in an ever-expanding universe.

Since the beginning of human civilisation, people have looked up at the night sky and wondered – are we alone? Science and technology of the 20th century has made it possible to try to address that question. So how is are we doing?

What have been the near-misses? How has the search evolved since then what are the current prospects of detecting a signal?

Jill Tarter from @SETIInstitute has worked on a number of major scientific projects, most relating to the search for extraterrestrial life and attempt to answer the question ”Are we alone in the universe.  The 1997 Hollywood film ‘Contact’ starring Jodi Foster was largely based on her work. 

As the former director of the Seti Institute, she explains when Seti research began, the technology used, how it is funded and the global collaborative international endeavour it has now become. 

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Episode 94 Seti – Techniques and Technology with Jill Tarter

By Gurbir Dated: September 17, 2021 Leave a Comment

The systematic search for extraterrestrial intelligence could only begin once the technology was sufficiently mature. That happened in early 1960s. Until then SETI was firmly in the realm of science fiction. 

How has the SETI evolved over the last six decades and especially what can modern technology allow today that was not possible then?

Jill Tarter from the @SETIInstitute has worked on a number of major scientific projects, most relating to the search for extraterrestrial life and attempt to answer the question ”Are we alone in the universe.  The 1997 Hollywood film ‘Contact’ starring Jodi Foster was largely based on her work. 

As the former director of the Seti institute, she explains when Seti research began, the technology used, how it is funded and the global collaborative international endeavour it has now become. 

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From Dying Stars to the Birth of Life – Book Review

By Gurbir Dated: February 12, 2012 Leave a Comment

Title: From Dying Stars to the Birth of Life: The New Science of Astrobiology and the Search for Life in the Universe
Publisher : Nottingham University Press
Author: Jerry L Cranford
ISBN : 978-1-907284-79-3
Price: £24.99 [237 pages hardcover]

Subtitled as “The new science of astrobiology and the search for life in the universe”, this is an abundantly illustrated book that attempts to cover the immensity of the universe and the minuteness of a living cell. The author establishes at the outset that he is not an astronomer. A now retired professor with years of experience in psychology and “brain sciences”, he brings his expertise of academia and research to his childhood passion of astronomy.

Astrobiology is a relatively new and still developing interdisciplinary field that studies origin and evolution of life throughout the universe. This book attempts to deals with some of the most poignant questions of Astrobiology that have faced humanity from the beginning. Where did life come from? What does it mean to be alive? Are we alone in the universe?  So dramatic are the developments in science and technology over the last half century that for the first time in human history tangible experiments can now be performed that have the potential to answer them.

The first half of the book takes the reader from the Big Bang to the emergence of stars, galaxies, and eventually supernovae that generate the fundamental elements to the complex compounds necessary for the development of life.  I found chapters 3 and 4 that described the constituent parts of living cells and how they work particularly interesting.

The final chapter is more rewarding than the title “Some final thoughts from the author” may at first suggest. In it the author turns to the question of why, in the technologically rich 21st century, science has been unable to provide a definitive answer to Fermi’s paradox – given that the universe is old and big enough to have nurtured life elsewhere than just that on Earth, why is it that life on Earth is the only one for which evidence exists?

Written in a somewhat unusual style, it has a freshness that readers new to the field may find attractive. The author jumps about between using the first and third person, variously talking about himself as “I”, “we” and “the author”.  He also uses “the present author” or “the present book” — why not simply “the author” or “the book”?    Initially oddities like these and others are a distraction, but they are relatively easy to get used to.

In the preface the author acknowledges support from many, including Seth Shostak from the SETI institute. Additional input like that from other specialists e.g. cosmologists, evolutionary biologists or planetary astronomers would perhaps have introduced a greater authority to the final product.

Many of the illustrations are sourced from the public domain, a welcome trend which I hope will flourish. This book lacked the typical highly formal scientific approach that an astronomer would have taken.  The author’s highly personal approach and an abundance of genuine passion for this subject is his unique contribution in this book.  If you wondered what astrobiology is all about, this detailed and enthusiastic review from a dedicated amateur is a good starting point to the current state of the subject.

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