The first humans who will step foot on Mars are walking the Earth today.
The twin Mars Exploration Rovers Spirit and Opportunity were launched toward Mars in the summer of 2003. They arrived months later in spectacular fashion, bouncing down safely on the surface ten years ago.
As usual, we did lots of awesome stuff at NASA this year. It’s hard not to do cool things when your job description includes “explore space.” You can check out our full list of 2013 accomplishments here, but here are a few of our favorites: