There Is A Gigantic Gas Cloud On A Collision Course With The Milky Way
NASA has released a unexampled video on the notorious Smith Cloud , a high - velocity cloud that is expected to crash into the Milky Way in about 30 million years . The swarm has a mass of 2 million sun and is moving at 310 kilometers ( 193 geographical mile ) per secondly . It was first discovered by astronomer Gail Smith in 1963 , and for many years it was reckon just one of the several high - velocity cloud around the Milky Way ....