How do we know 3I/ATLAS, also called comet C/2025 N1 (ATLAS), is interstellar? Will it strike Earth? Can we visit it? Here ...

Tissue samples sent to the International Space Station reveal what can happen to astronauts on long-term missions.

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

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

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