Mercury, Venus, Jupiter, and Saturn—will be visible to the naked eye. Uranus and Neptune, being much farther away, will ...

Out in the Kuiper Belt, the massive doughnut of debris beyond Neptune, about one in 10 kilometer-scale objects have surprised scientists with their unexpected shape. Rather than resembling a ball, ...

A planetary system 116 light-years from Earth has a peculiar pattern. It could flip the script on how planets form, scientists say.

ESA's Solar Orbiter captured views of the planet Mercury passing in front of the Sun. Multiple instruments aboard the spacecraft captured the imagery. Credit: Space.com | footage & orbit animation cou ...

Since the 1990s, scientists have discovered approximately 6,100 planets outside our solar system, called exoplanets.

The curious minds at What If predict the effects if Planet X entered our solar system, revealing orbital chaos, climate changes, and planetary disruption.

A newly studied solar system breaks the usual planet pattern, raising fresh questions about how rocky and gas planets form.

A small red dwarf star in the Milky Way has drawn attention after astronomers mapped four closely orbiting planets around it. The system, known as LHS.

The solar eclipse is one of the most amazing astronomical events that draws astronomers and sky viewers alike. Because they ...

Astronomers have found a rocky planet where it should not exist, orbiting far from a cool red star. Could this strange ...

Six planets will line up in a rare "planetary parade" this month - but spotting them all won't be easy.