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SYFY WIRE

Planet Nine

Dark Encounter

A new tool in the hunt for the elusive, and possibly fictional, 'Planet Nine'

If you're not careful, your moons might give you away.
By Cassidy Ward 3 months ago
Artwork of a possible planet far, far away. Credit: Caltech/R. Hurt (IPAC)

Where *isn't* Planet 9?

Astronomers are still looking for a possible giant planet far beyond Neptune.
By Phil Plait 1 year ago
Phil Plait Bad Astronomy gettyimages_garlick_planet9

Want to find Planet Nine? Here's a treasure map.

By Phil Plait 1 year ago
Art depicting a hypothetical Planet Nine orbiting the Sun far beyond Neptune. Credit: NASA/JPL-Caltech / Robert Hurt

New analysis weakens — but doesn't kill — the case for Planet Nine (UPDATED)

By Phil Plait 2 years ago
Artwork showing the super-Jupiter exoplanet HD 106906 b, orbiting over 100 billion km from its binary star host. A disk of planet-forming material surrounds the stars, indicating their young age. Credit: ESA/Hubble, M. Kornmesser

Does Planet Nine exist? An alien world 300 light years away gives hope

By Phil Plait 2 years ago
Artwork depicting a second sun, a binary companion to the Sun that may have existed billions of years ago. Credit: M. Weiss

Was the Sun once part of a binary star system?

By Phil Plait 2 years ago
Artwork of a possible planet far, far away. Credit: Caltech/R. Hurt (IPAC)

Has the Sun captured dozens of asteroids from another star? Wellll…

By Phil Plait 3 years ago
Artwork depicting Planet Nine, a theorized super-Earth orbiting the Sun several tens of billions of kilometers out. Observations of distant icy worlds imply this planet exists.

Could TESS have already seen Planet Nine?

By Phil Plait 3 years ago
Artwork of a possible planet far, far away. Credit: Caltech/R. Hurt (IPAC)

Does Planet 9 Exist? <All signs (still) point to 'yes'>

By Phil Plait 4 years ago
Artwork depicting the extremely distant Kuiper Belt Object 2018 VG18. Credit: Roberto Molar Candanosa/Carnegie Institution for Science

Meet your very, *very* distant solar system neighbor 2018 VG18

By Phil Plait 4 years ago
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