Engineers need good data to build lasting things. Even the designers of the Great Pyramids knew the limestone they used to ...

Futurist Michio Kaku sees humans doing ballet on Mars and projecting their brains into the cosmos. And aliens? Oh, they're ...

From mudstones on Mars to strange gases in exoplanet atmospheres, tentative evidence for extraterrestrial life is starting to come thick and fast. But when we've found it, how will we know for sure?

Just like your cellphone stays connected by roaming between networks, NASA's Polylingual Experimental Terminal, or PExT, ...