A stunning green aurora shimmers over Earth, with the International Space Station in the foreground. (Image credit: NASA/ Josh Cassada) When seen from Earth, auroras are nothing short of dazzling.

Earth is the only planet known to support life. Learn about what Earth is made of and where it came from. When you purchase through links on our site, we may earn an affiliate commission. Here’s ...

Off-Earth is an extension of her 2017 podcast, Making New Worlds, which asked ethical questions about space settlement. The book takes some of the same questions and expands on them.

Miles of air cover Earth. The boundary between Earth's atmosphere and outer space , the Kármán line, is about 62 miles (100 kilometers) above the planet's surface.

I was in awe of the idea of space travel and was told in order to pursue a career in that field, I would need to have a strong math background. As a result, math became my favorite subject.

Euclid’s new Einstein ring. The Einstein ring that Euclid spotted is located in the galaxy NGC 6505.It is only a hop, skip, and a jump away from Earth at 590 million light-years away.