NASA's DART asteroid smash flung 2 million pounds of rock into space

The massive tail created by the collision of a spacecraft and an asteroid earlier this year is unlocking key information about space rocks and how to respond if an asteroid ever threatens Earth.

NASA's DART asteroid smash flung 2 million pounds of rock into space
The massive tail created by the collision of a spacecraft and an asteroid earlier this year is unlocking key information about space rocks and how to respond if an asteroid ever threatens Earth.