Mars is facing a close call this weekend. A rare comet will pass by the planet at an extremely close distance.
Close encounter! All eyes were on outer space as a comet barreled toward the sun. Would it survive this dangerous journey?
Soon, for weeks as a time, a large object is expected to light the night sky. it could be wonderful or a total bust.
It was a once-in-a-lifetime sighting up in the sky. The transit of Venus—when the planet passes in front of the sun—is a rare phenomenon.
A first for the American space program, and Johns Hopkins University plays a critical role. Together with NASA, its applied physics lab attempted to put the first spacecraft into Mercury’s orbit.