Neptune, one of the farthest planets from the sun, has the longest orbit, with one year lasting 165 Earth years.

The James Webb Space Telescope helped scientists confirm the celestial lights on one of the most mysterious planets in our solar system.

Scientists using a telescope in Hawaii have discovered a never-before-seen dwarf planet lurking within the ring of icy bodies beyond the orbit of Neptune. The small new world -- temporarily named ...

It probably spent nearly all of the past 4.5 billion years in a deep freeze beyond Neptune, inside the comet Wild 2 (pronounced VILT-two). Decades ago Wild 2 somehow got nudged into an orbit that ...

Pfalzner notes that several objects beyond the orbit of Neptune move on eccentric orbits. “Several thousand celestial bodies are known to move beyond the orbit of Neptune,” said Pfalzner.

The James Webb Space Telescope has detected water vapor and thick clouds on LTT 9779 b, an ultra-hot Neptune locked in a blistering 19-hour orbit. Scientists using the James Webb Space Telescope ...

In general, as the distance from the Sun increases: the temperature decreases, for example, Mercury is 430 °C whereas Neptune is -200 °C the time taken to orbit the Sun increases, for example ...