Planet Nine Where *isn't* Planet 9? Astronomers are still looking for a possible giant planet far beyond Neptune. By Phil Plait 2 months ago Want to find Planet Nine? Here's a treasure map. By Phil Plait 5 months ago New analysis weakens — but doesn't kill — the case for Planet Nine (UPDATED) By Phil Plait 11 months ago Does Planet Nine exist? An alien world 300 light years away gives hope By Phil Plait 1 year ago Was the Sun once part of a binary star system? By Phil Plait 1 year ago Has the Sun captured dozens of asteroids from another star? Wellll… By Phil Plait 1 year ago Could TESS have already seen Planet Nine? By Phil Plait 2 years ago Does Planet 9 Exist? <All signs (still) point to 'yes'> By Phil Plait 2 years ago Meet your very, *very* distant solar system neighbor 2018 VG18 By Phil Plait 3 years ago A newly discovered *extremely* distant icy world points to Planet 9 By Phil Plait 3 years ago
Where *isn't* Planet 9? Astronomers are still looking for a possible giant planet far beyond Neptune. By Phil Plait 2 months ago
New analysis weakens — but doesn't kill — the case for Planet Nine (UPDATED) By Phil Plait 11 months ago
