Undersea detectors anchored deep in the Mediterranean Sea found an ultra-high-energy neutrino, a particle that opens a new window onto the cosmos.

"One advantage of the shallow entry, slow velocity atmospheric path model is that by the time the meteoroid is close to ...

A massive meteor strike on Mars sent shockwaves across the planet, revealing that some of its tremors weren’t tectonic but ...

It’s only the size of a suitcase, 8 by 19 by 11.7 inches—perfect for the overhead storage bin on a passenger aircraft. It’s even shaped like luggage, with a hinged lid and a side-mounted handle. But ...

A mysterious object that looked vaguely like a comet or a meteor was seen soaring over night skies in the southwestern U.S., ...