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

An international team of astronomers reports the discovery of a new giant exoplanet around an M-dwarf star (GEMS). The ...

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

Following the much-ballyhooed “planet parade” this winter, the planets have been gradually dipping below the horizon, ...

"Rings are mostly made of ice and small rocks," said William Saunders, a planetary scientist at NASA's Langley Research ...

"Saturn and Mars will be the easiest to spot higher up in the southeastern sky, while Jupiter and Mercury will be low on the ...