SpaceX Blasts Off to Crash Into an Asteroid

A SpaceX rocket blasted off Tuesday night for a mission of self-destruction ... and its end game is to save planet earth!

NASA commissioned Elon Musk's rocket company to hurl a Falcon 9 rocket into a nearly year-long journey which will end with the spacecraft bashing into a faraway asteroid.

Scientists want to see if the impact could actually change the asteroid's trajectory ... something that could be lifesaving if it were headed toward mother earth.

The spacecraft -- dubbed DART, short for Double Asteroid Redirection Test -- left earthly terra firma at Vandenberg Space Force Base in Cali ... and the whole thing is kinda like a ripoff of "Armageddon."

DART is supposed to violently connect with Dimorphos -- an asteroid that measures 525 feet across -- at a speed of 15,000 MPH.

Scientists say the impact will not destroy the asteroid ... but the goal is to change its orbit.

It's complicated, but if the asteroid moves for a minimum of 73 seconds, the mission is considered a raging success!