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planet nine

Latest in planet nine

Scientists are intrigued after spotting a highly unusual celestial object lurking at the very edge of our solar system.

Scientists Detect Mysterious Object in Deep Solar System

By Victor Tangermann

Astronomers have detected a promising sign of a ninth planet lurking at the the farthest reaches of the Solar System.

Scientists Say They May Have Spotted a Huge Hidden Planet Deep in Our Solar System

By Frank Landymore

Planetary scientists suggest an Earth-like planet, no bigger than three times the Earth's mass, could lurk beyond the orbit of Neptune.

Scientists Say There May Be Another Earth-Sized Planet Lurking in the Solar System

By Victor Tangermann

Scientists suggest another planet could be lurking in the Oort cloud, a collection of icy objects stretching beyond the Kuiper Belt.

Our Solar System May Be Hiding an Extra Planet, Scientists Say

By Victor Tangermann

Michael Rowan-Robinson, astronomer at the Imperial College London, may have found evidence for the elusive Planet Nine in 1983 infrared observations.

Scientists May Have Accidentally Spotted an Extra Planet in Our Solar System

By Victor Tangermann

A team of astronomers suggest trans-Neptunian objects could still be distributed uniformly in our Solar System, poking a hole in the Planet Nine theory.

Planet Nine Might Not Actually Exist, Scientists Say

By Victor Tangermann

A team of Harvard astronomers have a wild new theory: the Sun used to have a star companion while the solar system was being formed.

Science & Energy

Harvard Astronomers Propose That Our Star System Used to Be Binary

By Victor Tangermann

A team of astronomers from Harvard University and the Black Hole Initiative developed a new method to hunt for evidence of Planet Nine.

Science & Energy

Astronomers Want to Figure Out What the Hell Planet Nine Is Once and For All

By Victor Tangermann

An astrophysicist thinks that the mysterious Planet Nine may really be a six centimeter-wide black hole. And he has a plan to finally find it.

Science & Energy

A Black Hole May Be Orbiting Our Sun. This Guy Wants to Find It.

By Dan Robitzski

A new study questions the existence of Planet Nine — a long-rumored ninth planet in our solar system that orbits the Sun beyond Neptune.

New Research: There Might Not Be a Planet Nine After All

By Victor Tangermann

A team of astronomers at the UPenn have discovered 139 minor planets — too small for a planet, but not a comet either — orbiting the Sun past Neptune.

Scientists Discover 139 New “Minor Planets” in Our Solar System

By Victor Tangermann

By analyzing thousands of models of the distant solar system's evolution, astronomers think they've unraveled some of the mysteries surrounding Planet Nine.

Science & Energy

Astronomers Predict Planet Nine Has 5x the Earth’s Mass

By Kristin Houser

Theorized Planet Nine Might Actually Be A Cluster Of Little Rocks

Theorized Planet Nine Might Actually Be A Cluster Of Little Rocks

By Dan Robitzski

It’s 2018. Here Are Six Scientific Mysteries We Still Haven’t Solved.

Science & Energy

It’s 2018. Here Are Six Scientific Mysteries We Still Haven’t Solved.

By Victor Tangermann

Scientists Just Presented New Evidence That Supports Planet Nine’s Existence

Science & Energy

Scientists Just Presented New Evidence That Supports Planet Nine’s Existence

Rogue World: The Solar System’s Mysterious Ninth Planet

Rogue World: The Solar System’s Mysterious Ninth Planet