This lifespan began roughly 4.6 billion years ago, and will continue for about another 4.5 - 5.5 billion years, when it will deplete its supply of hydrogen, helium, and collapse into a white dwarf.

Only a few dozen of these short-lived binaries exist in the galaxy at a time, making the serendipitous find extremely ...

Melting polar ice is slowing the Earth’s rotation, but not enough to offset an even greater acceleration caused by changes in ...