Pluto may be small, but it has one of the most unusual moons in the solar system. Charon is so big compared to Pluto that the ...

Could the icy moons of our solar system hold life beyond our planet? Keith Cooper looks at how planetary scientists plan to ...

Works released in 1930 hit the U.S. public domain on January 1, including early animation icons, forgotten favorites, and the ...

In 2025, astronomers sharpened their view of the planetary system around Proxima Centauri — the sun's closest stellar ...