"Planet killer" asteroids discovered hiding in sun's glare
The massive space rock could be "very bad for life as we know it" if it collided with Earth.
Asteroid
NASA crashes DART spacecraft into asteroid
NASA successfully crashed its DART spacecraft into an asteroid in hopes of altering the space rock's trajectory. Scientists hope to be able to use a similar strategy to protect Earth from future incoming asteroids. CBS News' John Dickerson speaks with Derrick Pitts, chief astronomer at Philadelphia's Franklin Institute, about the historic implications of this unprecedented test.
NASA probe changed asteroid's course in successful test
The test verifies a possible technique for nudging a threatening asteroid or comet off course before it could impact Earth.
DART mission: How NASA hit the bullseye
The Double Asteroid Redirection Test, aimed at changing an asteroid's path as a method of protecting Earth from asteroid strikes, succeeded at striking a tiny moonlet 7 million miles away.
NASA hopes to knock asteroid off course
A first-of-its-kind NASA mission aims to ram a spacecraft into a harmless asteroid Monday night. As Mark Strassmann reports, the method could someday be used to defend planet Earth.
NASA tests planetary defense with asteroid collision
NASA crashed a spacecraft into an asteroid in a test that could one day be used to prevent a doomsday collision with Earth. Mark Strassmann has more.
NASA spacecraft to crash into asteroid
A NASA spacecraft is set to crash into an asteroid Monday to test if it can change the object's course. CBS News space analyst Bill Harwood discusses the DART mission and why it's happening now.
NASA spacecraft is about to hit an asteroid "head-on" at 15,000 mph
The DART spacecraft is set to purposely crash into an asteroid — a test for a potential real threat far in the future.
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