Million of years in the past, a comet or an asteroid might have slammed into the Earth at an important time in its climatic history.
Computerized modeling of Mars’ moon Phobos has a connection with keeping the Earth safe from asteroids, the Lawrence Livermore National Laboratory announced.
The first NASA explorer of its kind took off on a seven-year quest Thursday, chasing after a big, black, unexplored asteroid to gather a few handfuls of gravel for return to Earth.
An asteroid the size of a school bus buzzed by Earth Wednesday in an exceptionally close — but safe — flyby.
NASA's first-ever asteroid-sampling spacecraft is poised for an on-time liftoff Thursday evening, and mission team members said they can't wait.
Comets are pristine remnants left over from the solar system's formation 4.6 billion years ago, rather than younger fragments created by collisions between larger bodies, a new stu...
NASA's new asteroid-sampling mission will do a lot of interesting things, but helping prepare humanity for Earth's
A huge asteroid hurtling through space at 63,000mph could one day hit Earth causing "immense suffering and death", astronomers say.
A gem of a meteorite found in Antarctica is studded with pieces of opal, a crystal that is associated with water.
It seems the moon is not Earth's only cosmic companion.