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How many planetary exploration missions are there, and where are they? These days, it's hard to keep track, because there are so many. I plan to begin the new year by taking stock of active missions, figuring out what each has set out to do and accomplished so far, but first I want to step back to consider the spread of missions across the solar system as a whole.
A look ahead to see what's in store for the astronauts and cosmonauts aboard humanity's orbital outpost.
Two images of Earth taken from different spacecraft at the same time illustrate differences in "true" color imaging among spacecraft.
Europe's second mission to Mars has begun its journey from its birthplace in Cannes to its planned arrival at Mars on October 19. Since December 17 we've been able to watch every step of its journey via Twitter.
In a remarkable and wholly unexpected gift to Curiosity fans, the rover has just taken the first-ever color Mastcam self-portrait from Mars.
It's fun to watch the seasons shift from space, and as of this year we have new ways to do that.