Science ❯Astronomy ❯Celestial Bodies

Dwarf Planets

Pluto 2017 OF201 Sedna Trans-Neptunian Objects

New Distant Sednoid ‘Ammonite’ Casts Doubt on Planet Nine Hypothesis

Its highly eccentric orbit, confirmed through archival and telescopic data, undermines evidence for a shepherding ninth planet.

New Dwarf Planet Discovery Challenges Planet Nine Despite 40% Simulated Odds

William Shatner and Elon Musk Rally for Pluto's Planetary Comeback

Astronomers Identify Prime Candidate for Hypothetical Planet Nine

New 'Kiss and Capture' Theory Explains Pluto and Charon's Formation

Pluto and Charon's Formation Explained by 'Kiss and Capture' Collision

Ancient Stellar Flyby Reshaped Outer Solar System's Orbits