Why don't we have neon-green ice giants? The Earth itself is so famously blue that its blue hue, viewed from the vantage ...

Ancient Greek astronomers likely observed Uranus as a star, but limited tools and geocentric views kept them from recognizing ...

Information about Uranus is limited. What we know is that the planet is composed mainly of water and ammonia ice, its ...

Researchers found the south polar region darkened in winter shadow, while the north polar region brightened as summer came.

An international team used 20 years of data and photos taken by the Hubble Space Telescope to study Uranus' atmosphere and ...

A pale blue-green enigma, the planet Uranus has long fascinated astronomers precisely because of its extreme distance, some 1.6 billion miles (2.6 billion km) from Earth. While it is comparatively ...

Much of our understanding of Uranus comes from Voyager 2's flyby, which to date remains the only time a spacecraft has visited the planet. Voyager 2's data on the magnetosphere surrounding Uranus ...