The Perfect Theory: A Century of Geniuses and the Battle over General Relativity By Pedro G. Ferreira (Houghton Mifflin Harcourt, 288 pages, $28) On November 25, 1915, Einstein presented his new ...

We are at a critical time and supporting climate journalism is more important than ever. Science News and our parent organization, the Society for Science, need your help to strengthen environmental ...

Crewed space travel isn't just an engineering feat. It's a test of the endurance and resilience of the human body. In microgravity, astronauts' bodies undergo dramatic changes: muscles weaken, bones ...

You know how we've written a few stories about the growing problem of space debris? And, if you've seen Gravity, how a single piece of space debris can cause a cascade of destruction -- the Kessler ...