The European Space Agency said Wednesday that scientists have discovered what might be only the third known interstellar ...

Astronomers manning an asteroid warning system caught a glimpse of a large, bright object zipping through the solar system ...

NASA has discovered a mysterious interstellar comet entering our solar system. Learn what this strange visitor is and how scientists are tracking it now.

What if Venus became Earth's moon? Explore how our planet would change if Earth’s twin, a planet almost the same size and ...

The space agency spotted the quick-moving object with the Atlas telescope in Chile earlier this week, and confirmed it was a ...

NASA’s ATLAS survey telescope found an interstellar comet, which could be the largest yet, in the direction of the ...

ScientiFix, our weekly feature, offers you a summary of the top global science stories of the week, with links to their ...

Despite being known as the Red Planet, Mars shows off its swirling yellows, oranges and browns in a new satellite photo from ...

We live in a world defined by inches, feet and miles (or centimeters, meters and kilometers, if you prefer), and it’s not difficult for most of us to ...

Using infrared imaging data collected by the two satellites over a 10-year period from 2015 to 2025, the team estimated ...

I’ve spent much of my long life studying — and trying to understand — the history of the universe. Along the way, I have been constantly reminded that science is essentially international: Science ...