News

Do stars fall quietly into black holes?

30 May 2017 Astronomy Now

Astronomers at the University of Texas at Austin and Harvard University have put a basic principle of black holes to the test, showing that matter completely vanishes when pulled in. Their results constitute another successful test for Albert Einstein’s general theory of relativity.

News

First discovery of a binary companion for a Type Ia supernova

23 March 2016 Astronomy Now

A team of astronomers has detected a flash of light from the companion star to supernova 2012cg that lies in the edge-on spiral NGC 4424, 50 million light-years away in the constellation Virgo. This is the first time that the impact of an exploding star on its neighbour has been witnessed.