Help pilot the shuttle, race through a meteor shower, explore underground Martian caves, collect space gems, and more in an out-of-this-world adventure with The Backyardigans! Advertisement ...

It wasn't until the Space Shuttle Program was nearing retirement that a crewed mission to Mars was finally considered and funded by a US president. George W. Bush, in 2004, announced: "We will ...

While robotic missions have returned samples from the moon and space rocks like asteroids, a successful Mars mission would mark the first time that rocks from another planet made it back to Earth.