President Trump says we are going to Mars, and his friend Elon Musk has demonstrated a capacity to make it happen.

The study published on Nature.com highlights the threat growing space exploration can cause humanity back on Earth ...

But with talk of future space colonies and cities on Mars, there's a good chance that one day humans will give birth somewhere beyond Earth, and that brings up some interesting questions.

A U.S. scientist searching for a civilization across 7 Earth clones circling the red dwarf star TRAPPIST-1 says its own alien astronomers could also be scanning Earth.

What If is a Webby Award-winning science web series that takes you on a journey through hypothetical worlds and possibilities, some in distant corners of the universe, others right here on Earth.

A colony on Mars will fail as a back-up plan after a catastrophe on Earth. It is hard to see how it could repopulate Earth with a significant number of people. Returning to Earth from space is a ...

According to his Project Moon Hut, an initiative to create a sustainable future, a "mini-city" would be established by 2046, with space for 578 people. By 2063, with the trade flow with the Earth ...

As that description notes, the WorldView Legion spacecraft are capable of resolving features as small as 12 inches (30 ...