A look at the science behind Elon Musk's goal of a million-person city on Mars, and why planetary scientists say terraforming ...

SpaceX CEO Elon Musk believes that "SpaceX will be worth more than the rest of Earth if we accomplish our goals." ...

SpaceX started as a nearly bankrupt rocket company that failed its first three launches. Today, Elon Musk believes it could ...

A Soviet astronomer in the 1960s proposed a scale to classify hypothetical alien civilizations. Here’s why the framework is ...

Most people see the world as it is and ask how to live within its limits. A rare few imagine the world as it could become.

"Intensive scientific exploration of Antarctica has been underway for about 70 years and it is still the only continent on ...

Need a strategy game for summer? These 10 picks will keep you planning, conquering, and saying "one more turn." ...

A new Mars Rover image captured by NASA's Curiosity mission has reignited debate over whether unusual formations on the Red ...

A rather outlandish claim that an alien gun was spotted in a photo taken on Mars 12 years ago has drawn attention.

As part of plans to establish a lunar base, the space agency may send to the moon a spare test version of the rover — as well ...

NASA wants to send an ambitious fleet of helicopters to soar through Martian skies—but scientists fear the endeavor could crater existing Red Planet research missions.

A “self-sustaining civilization” on Mars depends on human reproduction there, a little studied subject. Credit: SpaceX concept The mission of SpaceX and founder Elon Musk is to make humanity ...