By Will Dunham WASHINGTON (Reuters) -Astronomers have spotted two hefty white dwarf stars - highly compact stellar embers - ...

A nearby cosmic ticking time bomb has been found! Just 150 light years away, a pair of white dwarf stars are on a death ...

When they reach the end of their long evolutions, smaller stars—those up to eight times as massive as our own sun—typically become white dwarfs. These ancient stars are incredibly dense.