"It's been such a puzzle that there was liquid water on Mars, because Mars is further from the sun, and also, the sun was ...

Though it's a cold, dead planet, Mars still has its own natural beauty about it. This image shows us something we'll never ...

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

Extraplanetary spacefaring has a hoary history in science fiction. Elon Musk, our so-touted Mars visionary, is an avid sci-fi ...

Sometimes, the best innovative ideas come from synthesizing two previous ones. We've reported before on the idea of having a balloon explore the atmosphere of Venus, and we closely watched the ...

NASA is working on an exciting mission to send humans to Mars in the next few decades. To make this happen, the agency is ...

Elon Musk has shared plans to use Starship rockets for long-distance flights on Earth. The billionaire claims it will be ...