For more than a century, popular culture has promised that humanity will spread effortlessly across the Solar System, turning Mars into a second Earth and building floating cities above Venus. The ...

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 ...

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

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 ...