Discovery of The Icy World L91 May Prove Planet Nine Exists

Astronomers have discovered a new small icy world that’s acting like no solar system object – planet, dwarf, asteroid or otherwise – has ever acted before. It’s so strange, they can’t even decide whether to blame its odd orbit on Neptune or the yet-unproven Planet Nine. Have they discovered the solar system’s missing link? “It’s right at the limit of … Continue reading →