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

Known as Noctilucent or night-shining clouds, twilight clouds are typically seen on Earth during the summer, but this time, ...

NASA researchers have identified geological structures on Mars that are unlike anything found on Earth. From spider-like ...

Despite having rarely left the president’s side over the preceding few months, Musk was blindsided by the announcement, according to people familiar with the matter.

This winter, with record snow in New Orleans and drought and destructive wildfires in Southern California, has not been ...

Butch Wilmore and Suni Williams are hoping to set the record straight again after an extended trip to the space station ...

While the sight is fascinating, scientists are still trying to understand why carbon dioxide ice clouds only form in specific ...