Scientific American spoke with the astronomer who has contributed to the discovery of two thirds of Saturn’s known moons ...

The European Space Agency’s ACES mission could ultimately pave the way for a global network of atomic clocks that make these ...

One Pluto year equals 248 Earth years. At 1473 miles in diameter—about half the width of the United States—Pluto is the ...

Today, it’s believed that Jupiter and Saturn, the largest planets, were the first to fully form, both within a few million ...

The large golden aura is formed from the incoming light reflected off the sun-side of the occulter, a device that blocks the ...

A massive 600,000-mile-long solar filament erupts from the sun’s surface Fiery filament blast triggers a stunning coronal mass ejection into space “Angel-wing” eruption mesmerizes skywatchers with its ...

Building a sustainable economy on the moon won't be easy, but we at least have some ideas about how to get started.

The moon spent a few million years as a volcanic wasteland, covered with ongoing eruptions that spewed from mountains and ...

Could Life Exist Beyond Earth? will take you on an interstellar adventure like no other. Rocketing you from Earth’s most ...

A fundamental responsibility of every member of the Arizona Game and Fish Commission is to ensure that the ethical standards ...

A team from the University of Arizona has made a startling new discovery about the formation of Pluto and its moon. Published ...

Solar material from the eruption will likely miss Earth. A massive solar filament erupted in dramatic fashion last night (May ...