Mars

"We see that Mars at some point in its past was much more Earth-like."
NASA scientists have found evidence of present-day liquid water on Mars. But before you start thinking about a second home there, know this.
Who will get there first, and when?
Neil deGrasse Tyson explains why Mars is a big deal.
"If we were to discover evidence of ancient life, or stranger still, something living there now...it would change the way every one of us feels about being alive."
One of the essential ingredients for life is discovered on the red planet.
Find out what the space agency has up its sleeve...
NASA says preparations for a manned mission to the Red Planet are proceeding as planned, with humans expected to set foot on Mars in the 2030s.
"We are farther down the path to sending humans to Mars than at any point in NASA's history."