Is there a killer asteroid with Earth’s name on it? We head to Denmark to find out about past collisions and talk to scientists at Nasa who look for threats from outer space. Show more
Discover 11,128,835 listings and 279,514 playable programmes from the BBC
Is there a killer asteroid with Earth’s name on it? We head to Denmark to find out about past collisions and talk to scientists at Nasa who look for threats from outer space. Show more