Amateur astronomers have spotted a mysterious celestial object that’s traveling at a mind-boggling speed of one million miles per hour. In fact, it’s moving so fast that it’s projected to leave behind ...

When an object in space appears to be racing at nineteen times the speed of sound, it instantly jumps from routine data point to global headline. The claim that NASA tracked such a hyperfast visitor ...

When you were five, you probably spotted your best friend running at “a million miles an hour” when they beat everybody at the local athletics meet. You probably haven’t seen anything that fast snice.