Planet 9 sits at the edge of scientific imagination, promising either an epic expansion of the Solar System or a lesson in ...

Scientists discover water that's solid and liquid. Superionic ice found in lab could explain Uranus and Neptune's bizarre ...

Discovered by volunteer scientists, this alien planet is out of synch with its siblings ...

If scientists are able to inspect it in person, and they find that Mars was indeed once alive with microbes, we would know ...

The star system V1298 Tau reveals that many planets begin as large, low-density worlds that slowly shrink and shed their ...

Most planetary systems contain worlds larger than Earth but smaller than Neptune, and the low-density planets around one ...

Thanks to the discovery of thousands of exoplanets to date, we know that planets bigger than Earth but smaller than Neptune ...

To find out, we talk with Michael Wong, an astrobiologist and planetary scientist at Carnegie Science. He gets into ...

Among the thousands of known exoplanets orbiting stars beyond the Solar System, a number present complexities that current classification systems struggle to explain. One planet, located about 47 ...

For decades, Uranus and Neptune have been filed neatly into the “ice giant” drawer, shorthand for worlds built mostly from ...

A new computational model suggests that Uranus' and Neptune's cores may be less icy than their "ice giant" nickname suggests. When you purchase through links on our site, we may earn an affiliate ...

Space.com reports that new analysis of Voyager 2 data suggests Uranus may have been experiencing a strong solar wind event during the spacecraft’s 1986 flyby. Researchers revisited the measurements ...