Scientists have announced the discovery of 139 new objects situated in the far reaches of our solar system.
Scientists have successfully identified an entirely new moon in orbit around the gas giant Neptune.
Astronomers have found what is thought to be the first confirmed moon in orbit around an extrasolar world.
For the first time ever, scientists have detected helium in the atmosphere of a planet in orbit around a distant star.
Astronomers have been analyzing the atmosphere of a Neptune-sized planet located 430 light years away.
A strange object spotted beyond the orbit of Neptune appears to be going around the sun in reverse.
Astronomers have identified a previously unknown dwarf planet in the outer reaches of the solar system.
Archive images taken by the Hubble Space Telescope have revealed a previously undiscovered moon.
Neptune's moon Tritan is unusual in that it is geologically active and has a retrograde orbit.
The planet Neptune is nearing the end of its first complete orbit since it was discovered in 1846.
New research has suggested that there could be liquid diamond oceans with solid diamond icebergs floating in Uranus or Neptune.
It has been suggested that Galileo Galilei may have discovered the planet Neptune 234 years earlier than previously thou...