Thanks to Einstein’s relativity, time flows differently on Mars than on Earth. NIST scientists have now nailed down the ...

Nuclear pulse propulsion is a technology that would work. It was being developed in the 1960s but it was stopped because of the nuclear test ban treaty and concerns over fallout inside the ...

Bringing samples from Mars back to Earth is one of NASA's most ambitious goals. The plan goes back to the 1970s, with NASA's robotic exploration program, when the first spacecraft landed on the ...

There's something big missing from our solar system — and that may be a good thing. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Planetary ...

Mars is about 140 million miles from our cozy planet. A human mission to that cold, rocky neighbor would mean being away from Earth for about 3 years. But the things those explorers would see and ...

The interstellar visitor will pass just 30 million kilometers from Mars on Oct. 3 — far closer than it comes to Earth. When you purchase through links on our site, we may earn an affiliate commission.

A mysterious interstellar comet — just the third such object ever confirmed to have entered our solar system — streaked past Mars last week. A spacecraft in orbit around the red planet had a front-row ...