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What Is Planet Nine and Why Can’t We Find It?

What Is Planet Nine and Why Can’t We Find It?

They call it Planet Nine—but whether the mystery object is actually a planet or exists at all remains to be proven.

PublishedApril 26, 2022

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Most Popular Latest Videos Tech Science io9 Earther

Most Popular

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Chukwudi Iwuji Talks Working on Guardians of the Galaxy Vol. 3 After Peacemaker

Chukwudi Iwuji Talks Working on Guardians of the Galaxy Vol. 3 After Peacemaker

Gillian Jacobs Reacting to Her D&D Character Sheet From Community | io9 Interview

Gillian Jacobs Reacting to Her D&D Character Sheet From Community | io9 Interview

Yvette Nicole Brown on the Pulled Dungeons & Dragons Episode of Community | io9 interview

Yvette Nicole Brown on the Pulled Dungeons & Dragons Episode of Community | io9 interview

James Gunn on Pressure to Add Adam Warlock to Guardians of the Galaxy | io9 Interview

James Gunn on Pressure to Add Adam Warlock to Guardians of the Galaxy | io9 Interview

What Does James Gunn Want from His Superman Movie? | io9 Interview

What Does James Gunn Want from His Superman Movie? | io9 Interview

Latest Videos

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Caleb McLaughlin Wants to Play DC's Static Shock

Caleb McLaughlin Wants to Play DC's Static Shock

Sean Gunn on Working With His Brother | io9 Interview

Sean Gunn on Working With His Brother | io9 Interview

Creating Melissa McCarthy’s Performance of an Iconic Disney Villain | io9 Interview

Creating Melissa McCarthy’s Performance of an Iconic Disney Villain | io9 Interview

Twitter Is Shifting Right | Future Tech

Twitter Is Shifting Right | Future Tech

Bert Kreischer’s Secret Twitter Handle Was Ridiculous | Gizmodo Quiz

Bert Kreischer’s Secret Twitter Handle Was Ridiculous | Gizmodo Quiz

Tech

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Twitter Is Shifting Right | Future Tech

Twitter Is Shifting Right | Future Tech

Bert Kreischer’s Secret Twitter Handle Was Ridiculous | Gizmodo Quiz

Bert Kreischer’s Secret Twitter Handle Was Ridiculous | Gizmodo Quiz

ChatGPT’s Creator Buddies Up to Congress | Future Tech

ChatGPT’s Creator Buddies Up to Congress | Future Tech

Twitter Can’t Moderate Gore Any More | Future Tech

Twitter Can’t Moderate Gore Any More | Future Tech

Live Stream Podcasting via One Button? | Gizmodo Interview

Live Stream Podcasting via One Button? | Gizmodo Interview

Science

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New 3D Scans Show the Titanic in All Its Sunken Glory

New 3D Scans Show the Titanic in All Its Sunken Glory

Experimental Gel Killed 100% of Brain Tumors in Mice

Experimental Gel Killed 100% of Brain Tumors in Mice

Everything We Noticed During SpaceX Starship’s Explosive Debut Launch

Everything We Noticed During SpaceX Starship’s Explosive Debut Launch

China Inches Closer to SpaceX Tech With Successful Vertical Landing Demo

China Inches Closer to SpaceX Tech With Successful Vertical Landing Demo

New Zealand Spaceplane Performs First Rocket-Powered Flight, Achieving Major Milestone

New Zealand Spaceplane Performs First Rocket-Powered Flight, Achieving Major Milestone

io9

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Caleb McLaughlin Wants to Play DC's Static Shock

Caleb McLaughlin Wants to Play DC's Static Shock

Sean Gunn on Working With His Brother | io9 Interview

Sean Gunn on Working With His Brother | io9 Interview

Sean Gunn’s Favorite Songs From the Guardians Series

Sean Gunn’s Favorite Songs From the Guardians Series

Guardians of the Galaxy Vol. 3 Star Sean Gunn on Performing Young Rocket Raccoon

Guardians of the Galaxy Vol. 3 Star Sean Gunn on Performing Young Rocket Raccoon

Creating Melissa McCarthy’s Performance of an Iconic Disney Villain | io9 Interview

Creating Melissa McCarthy’s Performance of an Iconic Disney Villain | io9 Interview

Earther

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Get Ready for Another Summer of Invasive Lanternflies | Extreme Earth

Get Ready for Another Summer of Invasive Lanternflies | Extreme Earth

Lower Drought Conditions In California | Extreme Earth

Lower Drought Conditions In California | Extreme Earth

Deadly Mississippi Tornado Kills More Than 2 Dozen | Extreme Earth

Deadly Mississippi Tornado Kills More Than 2 Dozen | Extreme Earth

Rail Company Sued For Train Derailment in Ohio | Extreme Earth

Rail Company Sued For Train Derailment in Ohio | Extreme Earth

Yet Another Storm in California | Extreme Earth

Yet Another Storm in California | Extreme Earth

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