What makes this idea so compelling is that it flips the usual Mars fantasy on its head. We picture astronauts planting flags, ...

A mission to Mars may sound like humanity’s next giant leap, but the truth could be far stranger. What if the first “humans” ...

The humans who move to Mars might not remain "human" for very long. Evolution is a powerful force, transcending planetary boundaries. As Rice University biologist Scott Solomon points out in his ...

It's an age-old debate in space circles: Should humanity's first city on another world be built on the moon, or on Mars? As recently as last year, SpaceX founder Elon Musk saw missions to the moon as ...