More than 200 million years ago, a massive extinction decimated 76 percent of marine and terrestrial species, marking the end of the Triassic period and the onset of the Jurassic.

Distant, dust-filled galaxies were bursting with newborn stars much earlier in cosmic history than previously thought, according to newly published research.

The U.S. National Science Foundation (NSF), in collaboration with its Canada and Taiwan partners, Japan, Europe and Chile, inaugurated the Atacama Large Millimeter/submillimeter Array (ALMA).

In the movie Alien, the title character is an extraterrestrial creature that can survive brutal heat and resist the effects of toxins.

A century after Western explorers first crossed the dangerous landscapes of the Arctic and Antarctic, researchers have deployed a self-guided robot that uses ground-penetrating radar to map deadly crevasses hidden in ice-covered terrains.

A network of U.S. seismographic stations recorded spectacular signals from the blast waves of the Chelyabinsk meteor that landed in Russia.