A rare full seven-planet alignment will be visible in the early night sky between Feb. 22 and 28. We have the tips you need ...

A rare full seven-planet alignment will be visible in the early night sky between Feb. 22 and 28. We have the tips you need ...

The clouds, composed of carbon dioxide ice crystals, glow in shades of red, green, and pearlescent hues in the martian ...

Videos from Yosemite National Park show the iconic "Firefall" phenomenon glowing at Horsetail Fall inside California's crown jewel.

Active volcanoes, thick jungles, Caribbean waters: few countries pack as much diversity within such compact borders as ...

The limestone karst islands and idyllic bays off Thailand’s southwest coast are home to coral gardens, colourful schools of ...

A parade of seven planets is set to appear in the night sky this month, and it will be the last of its kind until 2040.

Mars is often seen as a barren, rust-colored wasteland, but NASA’s Curiosity rover has just revealed a surprising burst of ...

Welcome to Arthur, Illinois! Nestled in the heart of Illinois, Arthur is a charming slice of Americana that feels like it’s ...

Stars form in regions of space known as stellar nurseries, where high concentrations of gas and dust coalesce to form a baby ...

The iridescent cloud reveals new clues about ice formation in the Martian atmosphere (no little green men, sorry).