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 ...

The seventh planet in the solar system has an average temperature of just -195°C, unsurprising given it’s 1.8billion miles ...

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 ...

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 ...

More than three decades after Voyager 2's pass, scientists have seen Neptune's auroras again with the powerful Webb telescope, producing “the first robust detection," co-author Heidi Hammel of ...