Astronomers Identified a Lemon-Shaped Planet Displaying a Feature 'Unlike Anything Observed Before' ...

Skygazers, mark your calendars because one of the coolest celestial events is coming around again toward the end of February.

Astronomers have identified a wildly distorted world that looks less like a sphere and more like a squeezed citrus fruit, and it is rewriting what I thought I knew about how planets form and survive.

The planet HD 189733 b was discovered in 2005, as one of many huge gas worlds snuggled tightly against their suns. It gradually gained popularity for .

Polygon has rounded up the best icy sci-fi planets from our favorite video games, movies, television, and books ...

Mercury, Venus, Jupiter, Saturn, Uranus, and Neptune will be visible after sunset on February 28. Find out how to watch this rare event.

We have all been taught in school that planets revolve in the same direction as the Earth, i.e., in the counterclockwise ...

Spectacular clouds swirl across the surface of Jupiter. These clouds contain water, just like Earth's, but are much denser on ...