Solar System

Md.-Made Instruments Help NASA Collect Debris From CometThere's nothing like being at the right place at the right time. That includes the planet Mars.
Comet On Near-Collision Course With The Red PlanetMars is facing a close call this weekend. A rare comet will pass by the planet at an extremely close distance.
Thanksgiving Day Show In The Sky! Comet Ison Makes Close Encounter With The SunClose encounter! All eyes were on outer space as a comet barreled toward the sun. Would it survive this dangerous journey?
If The Sun Doesn't Blast It, Comet ISON Will Soon Light Up The SkySoon, for weeks as a time, a large object is expected to light the night sky. it could be wonderful or a total bust.
Stargazers Watch The Transit Of Venus, A Rare Celestial EventIt 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.
Johns Hopkins Plays Role In 1st Spacecraft In Mercury’s Orbit 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.