Accretion process same for growth of stars and black holes

19 October 2015 Astronomy Now

One of the most important but least understood processes in astronomy is accretion, where the mass of an object grows by gravitationally collecting material from nearby. Now an international team has discovered that that the process by which astronomical objects grow is fundamentally the same, regardless of the type, mass or size of the object.


Exiled stars explode far from home

5 June 2015 Astronomy Now

Hubble Space Telescope images confirm that three supernovae discovered several years ago exploded in the dark emptiness of intergalactic space — their nearest neighbours probably 300 light-years away — having been flung from their home galaxies millions or billions of years earlier.