Despite being known as the Red Planet, Mars shows off its swirling yellows, oranges and browns in a new satellite photo from ...

The mementoes — a set of more than 50 pieces called the Sally Ride Estate Collection — sold for a total of $145,666, ...

Climate scientists in the United States are to be cut off from satellite data measuring the amount of sea ice — a sensitive ...

U.S. astronaut Nichole "Vapor" Ayers captured a spectacular view of a phenomenon known as a "sprite" blazing to life above an ...