While visions of Mars colonies, floating cities above Venus, and humans exploring distant moons inspire wonder, the reality ...

Decades before modern rovers ever reached Mars, NASA scientists were already imagining permanent human colonies on the red ...

When Philip K. Dick imagined artificial beings in his book "Do Androids Dream of Electric Sheep," the question was whether machines could think and feel like humans. Today, NASA is posing a related, ...

NASA hasn't landed humans on Mars yet. But thanks to robotic missions, scientists now know more about the planet's surface than they did when the movie was released. When you purchase through links on ...