Mars Rovers Still Truckin' After Four Years
It's the fourth anniversary of NASA's rover mission to Mars and both "Spirit" and "Opportunity" have made it to spots where their solar panels are getting enough power from the planets' weak winter sunlight. The anniversary marks another incredible milestone, because the rovers were expected to last only a few months.Related Videos
Word of the Day
Word of the Day
provided by The Free Dictionary
Today in History
This Day in History
provided by The Free Dictionary
Quiz Me
What recent discovery may be blamed for declining polar bear population?
or View Results
RSS Feeds