◼ Archived
Science
The Solar System May Have a 6th Dwarf Planet
Astronomers have identified a new dwarf planet candidate beyond Pluto, potentially making it the sixth recognized dwarf planet in our solar system.
Trans-Neptunian Object
2 trends tracked about this subject — the full history, oldest to newest below.
▲ Peaking
Science
Backward world? Rubin finds a retrograde object past Neptune
Astronomers using the Rubin Observatory have found an object beyond Neptune orbiting backward relative to the planets, sparking debate over whether it was captured from interstellar space or flung outward by Neptune.