A new classification scheme may help us better understand planet formation — including the history of our own family of worlds.

Researchers have developed a low-cost, durable, do-it-yourself (DIY) air cleaner that works as well as more expensive HEPA ...

3 NASA astronauts, cosmonaut return to Earth Crew-8 splashes down off coast of Florida after more than 200 days in orbit ... the evening sky on Friday, with Mercury joining Mars, Jupiter, Uranus ...