Comet Siding Spring sailed past Mars on Sunday, coming 10 times closer to the Red Planet than any comet on record has come to Earth.
On Sunday, a comet the size of a mountain will brush past Mars, passing just 87,000 miles away from the red planet.
A giant kangaroo relative that lived 100,000 years ago may have used its hind two legs for walking, not hopping, according to a new study.
A team of engineers at MIT that studies the technology needed for humans to live on other planets has determined that the Mars One plan to send four people to colonize the Red Planet by 2025 is not possible.
Here's a little secret about violins: they don't need to look the way they do to sound great.
A speeding comet the size of a mountain will come within 87,000 miles of Mars on Oct. 19, and NASA is planning to observe it with just about everything the agency's got.