An oddly tilted object beyond Neptune moves in perfect sync, one orbit for every ten of Neptune’s, and scientists are intrigued.

NASA’s twin Voyager spacecraft, Voyager 1 and Voyager 2, embarked on a historic journey to explore the outer planets of our solar system. Taking advantage of a rare planetary alignment, the probes ...

Jupiter, Saturn, and Neptune each emit more energy than they receive from the Sun, meaning they have comparatively warm ...

Uranus does have an internal heat source like its planetary siblings, which may have led scientists to misinterpret the data ...

Scientists looked at decades' worth of data, combining reports and readings from various spacecraft and new computer modeling ...

But scientists now say that Uranus is actually warmed from the inside, according to a study published in Geophysical Research ...

Researchers from the University of Houston, led by Dr. Xinyue Wang, launched a deep probe of Uranus’ data — and determined ...

The discovery challenges findings made by Voyager 2, which collected data suggesting Uranus, unlike other giant planets in ...

A new study led by University of Houston researchers, in collaboration with planetary scientists worldwide, suggests Uranus ...

Before defining what a light-year is, we should define what a light-year is not: It is not a measure of time, but rather a ...

NASA's Voyager 2 spacecraft made its closest approach to Jupiter. It came within 354,000 miles (570,000 kilometers) of the ...

Voyager captures Neptune: Clicked on October 14, 1999 by NASA Voyager 2, this photo of Neptune shows three distinct features of the planet, including the Great Dark Spot at the North.