Decades before modern rovers ever reached Mars, NASA scientists were already imagining permanent human colonies on the red planet. The plan involved reshaping Mars itself, warming the planet and ...

Near the start of the 20th century, a strange phenomenon swept the country — "Mars Mania," a public obsession with the idea, pushed by astronomer Percival Lowell, that Mars was home to an intelligent ...

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, ...

Why do scientists and space agencies want to colonize Mars? One reason is that the planet has several Earth-like features, including polar ice caps and a day length similar to ours. Evidence of water ...