You might think sex in space would be an out-of-this-world experience — but low-gravity intimacy may not be as much of a high as it sounds.

NASA’s Curiosity rover captured stunning images of Martian twilight clouds, revealing iridescent dry ice formations on Mars.

The phenomenon of twilight clouds was first observed on Mars in 1997 during NASA’s Pathfinder mission. However, it wasn’t ...

"An epic exploration of possibilities. 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 ...

NASA’s Curiosity rover has captured breathtaking images of red and green-tinted clouds drifting across the Martian sky. These ...

Musk's DOGE is about to audit one of the agencies that has secured him billions in contracts over the last decade.

From the daily newsletter: a doctor goes to Mars. Plus: investigating celebrity yearbooks; Merve Emre on friendship books; ...

The threat of a newly discovered asteroid has risen slightly in the past few weeks, as the world's telescopes rush to track its course. But the chance of an impact is still quite slim.

Jumping workouts could help astronauts prevent the type of cartilage damage they are likely to endure during lengthy missions to Mars and the Moon, a new study suggests. The researchers found that ...

The Sun sets differently on Mars. Part of that is due to its distance from the star (an average of 142 million miles versus ...

Russia's state-owned Rosatom announced a prototype plasma engine which could speed up travel to other planets.

This week, we examine how a phone call between President Donald Trump and Vladimir Putin has raised concerns among European ...