Young, close-orbiting exoplanets known as sub-Neptunes may form farther from their stars and migrate inward or lose their ...

For the first time, astronomers have captured direct images of Neptune's elusive auroras. Scientists have long suspected that the distant ice giant hosts shimmering light displays, based on ...

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.

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 ...

to study young sub-Neptunes—planets bigger than Earth but smaller than Neptune—that orbit close to their stars. The work provides insights into how these planets might migrate inward or lose ...

A combination of cosmic processes shapes the formation of one of the most common types of planets outside of our solar system ...