By Dennis Overbye It was a project that launched a thousand interstellar dreams. Fifty years ago, NASA published a fat, 253-page book...

By Kenneth Chang Ed Lu wants to save Earth from killer asteroids. Or at least, if there is a big space rock streaking our way, Lu, a...

By Veronique Greenwood Twenty million years ago, a predator with a mouth like a subway door and teeth the size of your palm roamed the...

By Kenneth Chang NASA’s InSight spacecraft is not quite dead yet. But InSight, a stationary robotic probe on Mars, has been steadily...

By Catrin Einhorn About 20% of reptile species risk extinction, mainly because people are taking away their habitats for agriculture,...

By Julia Jacobs Many people know them as agile bipedal dinosaurs with menacing claws and scrunched-up arms, hunting children through a...

By Carl Zimmer Colin Carlson, a biologist at Georgetown University, has started to worry about mousepox. The virus, discovered in 1930,...

By Dennis Overbye Astronomers have been leapfrogging each other into the past lately. Last week, a group using the Hubble Space Telescope...