Peter Challis – Astronomy Now

3 October 2025

Latest News

[ 24 September 2025 ] Nova outburst in Centaurus News
[ 12 September 2025 ] Astronomy Now relaunches digital platform News
[ 8 September 2025 ] Potentially habitable planet TRAPPIST-1e displays tentative evidence for an atmosphere News
[ 18 August 2025 ] Ten-Year Lease Extension Confirmed at Herstmonceux Observatory News
[ 10 August 2025 ] Venus and Jupiter’s bright morning conjunction 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.