Astronomers Discover An Entire Cluster of Stars Tossed From Its Galaxy

Scientists have seen hypervelocity stars before, but this is the first time they've ever observed an entire star cluster thrown from its host galaxy. Named HVGC-1, it's traveling at a rate of 2 million miles per hour — and its ultimate fate is to drift through the cosmic void for all time. » 4/30/14 10:00pm 4/30/14 10:00pm

An entirely new class of galaxy-escaping hypervelocity stars

Every once in a while, the Milky Way's supermassive black hole flings a wayward star into intergalactic space at speeds reaching 2 million miles per hour. But astronomers have now discovered a surprising new class of "hypervelocity stars" that can escape the galaxy — and they don't need the galactic core to do it. » 1/10/14 8:00am 1/10/14 8:00am