Solar System

comet

Md.-Made Instruments Help NASA Collect Debris From Comet

There’s nothing like being at the right place at the right time. That includes the planet Mars.

11/07/2014

comet

Comet On Near-Collision Course With The Red Planet

Mars is facing a close call this weekend. A rare comet will pass by the planet at an extremely close distance.

10/17/2014

comet

Thanksgiving Day Show In The Sky! Comet Ison Makes Close Encounter With The Sun

Close encounter! All eyes were on outer space as a comet barreled toward the sun. Would it survive this dangerous journey?

11/28/2013

Comet ISON

If The Sun Doesn’t Blast It, Comet ISON Will Soon Light Up The Sky

Soon, for weeks as a time, a large object is expected to light the night sky. it could be wonderful or a total bust.

09/10/2013

UNSPECIFIED - SEPTEMBER 07: Venus begins to transit the face of the sun, on June 8, 2004. The image shows the mysterious black drop effect. (Photo by Babek Tafreshi/SSPL/Getty Images)

Stargazers Watch The Transit Of Venus, A Rare Celestial Event

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.

06/05/2012

mercury, messenger

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.

03/18/2011

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