Astrophiz 30: Dr Elizabeth Tasker debunks ‘Earth2.0’ in Trappist-1 system + Dr Ian Musgrave ‘What’s Up Doc?’

A30b copyAstrophiz30: Out now on iTunes and Soundcloud.
Dr Elizabeth Tasker Debunks the notion that ‘Earth 2.0’ has been found in the Trappist1 system + Dr Ian Musgrave’s “What’s Up Doc”
Our feature interview is with Dr Elizabeth Tasker who gives a reality check to the claims that ‘7 earth-like planets’ have been found around TRAPPIST-1, a small star about 40 light years away, and in her most recent paper, calls for a more accurate definition of our use of the term ‘habitability’.
Elizabeth is a British astrophysicist who works at JAXA, the Institute of Space and Astronomical Science, the Japan Aerospace Exploration Agency.

Our regular segment features Dr Ian Musgrave of ‘Astroblog’ fame, and he tells us what to look for in the night and morning skies over the next few weeks.

In the news:

1. The Explosive beginnings of a supernova spotted for the first time (via Amy Middleton reporting for cosmosmagazine) and she writes about a new paper in Nature Physics about the spectacular transformation of a star, assumed to have been a red supergiant, into a supernova, just three hours after it began.

2. The unexpected discovery of young stars in old star clusters may send scientists back to the drawing board and change our understanding of how stars evolve (via Monthly Notices of the Royal Astronomical Society: Letters, posted in physDOTorg/astronomy)

3. A White Dwarf star X9, is the closest star ever found orbiting a black hole, and it’s orbiting at an astonishing 12 million km/h. The stellar dance between these two objects is taking place inside a globular cluster 47 Tucanae, a group of about a million stars orbiting the galactic centre about 15,000 light years from Earth. (reported by Marcus Strom for the Sydney Morning Herald)

Next episode: Dark Matter with Dr Elisabetta Barberio (out on 6 April)

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