Supernova hurls star out of the galaxy
US 708 is Milky Way’s fastest-moving stellar escapee
![Hypervelocity star](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/03/cc_exiled_star_free2028129.png?fit=860%2C460&ssl=1)
ON THE LOOSE Hypervelocity stars (one illustrated) travel so fast they can escape the galaxy. US 708 is the fastest known of this cohort, possibly ejected by a supernova explosion, astronomers say.
Ruth Bazinet, CfA