Scientists have detected emanating from the nucleus of a galaxy relatively close to our Milky Way flashes of X-rays gradually ...

Strange x-ray pulses hint at a surprisingly long-lived white dwarf orbiting precariously close to a supermassive black hole ...

Gravity then causes them to collapse and blow off their outer layers in a "red giant" stage ... to confirm that this is indeed a white dwarf using next-generation observatories such as Nasa's ...

That’s according to new research that lays out exactly what humans can achieve over the next few centuries in ... The star itself, an ultra-cool dwarf, would appear about three times larger ...

At this stage, the star becomes a large red giant. Because a red giant is so large ... greatly outshines its white dwarf companion, Sirius B. At 8.6 light-years away, Sirius B is the nearest ...