A rare observation opportunity revealed the presence of a thin atmosphere around a small object beyond Pluto.

A team of professional and amateur Japanese astronomers found evidence for a thin atmosphere around a small body in the outer ...

Scientists studied how space junk moved in orbit over a 36-year span, finding that increased solar activity caused it to fall ...

If confirmed, the rock would become just the second world past Neptune in our solar system to host an atmosphere.

A new study suggests that a tiny, icy world beyond Pluto harbors a thin, delicate atmosphere that may have been created by ...

By probing the atmosphere of a mini-Neptune exoplanet, the James Webb Space Telescope has found that it formed much farther ...

One of the early highlights during the mission was the “Hello, world” image captured by Artemis II Commander Reid Wiseman as the Orion spacecraft left Earth on its outbound journey toward the Moon.

A scorching, airless world just 48 light-years away is offering scientists a rare glimpse into the geology of distant planets ...