Science ❯ Astronomy ❯ Celestial Bodies

Trans-Neptunian Objects

2017 OF201 2023 KQ14 Ice Volcanoes Extreme Trans-Neptunian Objects 2020 VN40 Comet Composition Sednoids

Astronomers Detect Thin Atmosphere on Small World Beyond Pluto

The result challenges models of volatile retention on small icy worlds.

First Trans-Neptunian Object Found in 10:1 Neptune Resonance

Discovery of 'Ammonite' Narrows Search for Planet Nine