For the first time, a fleet of orbiters and a rover circling another world has captured detailed views of an interstellar visitor as it swept through the inner solar system. As comet 3I/ATLAS brushed ...

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 ...

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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 ...

It's possibly as big as Manhattan, likely older than our own solar system and it's traveling through space at speeds of up to 153,000 miles per hour. It's also only the third confirmed interstellar ...

"I'd actually love to see the 'big one' at Mars this year — a large event that we can study to understand solar radiation better before astronauts go to Mars." When you purchase through links on our ...

Ask someone on Earth for the time and they can give you an exact answer, thanks to our planet's intricate timekeeping system, ...