Do micro-organisms explain features on comets?

Comet 67P/Churyumov-Gerasimenko, studied in detail by the European Space Agency Rosetta and Philae spacecraft since September 2014, is a body with distinct and unexpected features. Now two astronomers have a radical explanation for its properties - micro-organisms that shape cometary activity. Dr Max Wallis of the University of Cardiff set out their ideas today (Monday 6 July) at the National Astronomy Meeting at Venue Cymru in Llandudno, Wales. A close up image of comet 67P/Churyumov-Gerasimenk...