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Mysterious Earth-sized planet could be hiding in plain sight in our Solar System

If such a planet exists, researchers say it would have a mass about 1.5 to...3 times that of Earth!

Newsroom September 6 11:17

Astronomers have found likely evidence of an Earth-like planet in the Solar System that may be circling the Sun in an orbit beyond Neptune.

Physicists, including those from the National Astronomical Observatory of Japan, said the planet could be much closer than the hypothetical Planet Nine thought to exist in the far outer edges of the Solar System.

Several studies in the past have suggested there is likely a yet-undiscovered planet beyond the Kuiper Belt – a stellar disk of materials such as asteroids, space rocks, comets around the Sun in the outer Solar System past the orbit of Neptune.

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In the new research, published recently in The Astronomical Journal, scientists found that some of the objects in the Kuiper Belt behave in a way indicative of the presence of a small planet among them.

Continue here: The Independent

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> World

One dead after train–bus collision at the Port of Hamburg – see photos

Ten people were injured in the collision, including the bus driver, who is in critical condition

January 16, 2026

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January 16, 2026

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