The concept of Planet X, or Planet Nine, has captivated astronomers for decades. This hypothetical planet, theorized to be ...

Astronomers may have uncovered a potential candidate for the elusive Planet Nine, a hypothetical planet located far beyond the orbit of Neptune. This discovery comes from a reexamination of 40 ...

Now, a newly identified object spotted in two infrared sky surveys has renewed the question of whether the elusive and hypothetical Planet 9 actually exists. According to a new pre-print study ...

(Pluto is considered a Kuiper Belt object.) This hypothetical Planet 9 has never been directly observed and remains theoretical, but in new research uploaded to the preprint site arXiV, scientists ...

The argument for the planet has to do with the Kuiper Belt: a region of icy debris far beyond Neptune’s orbit. The hypothetical planet would explain some strange orbits of the objects there.

Astronomers searching for a ninth planet in our solar system say they've found a "good" candidate far beyond Neptune, according to a new preprint study. This could be humanity's first glimpse at the ...

Its nickname? “Farout.” The… Read More While searching for a hypothetical Planet Nine, astronomers found a distant mini-world that’s been given a spooky nickname: “The Goblin.” ...

While searching for a hypothetical planet at the far edges of our solar system known as Planet Nine or Planet X, a team of astronomers discovered 12 new moons around Jupiter. That brings the total ...

Planet Nine, also known as Planet X, is a hypothetical celestial object that would distantly orbit our Sun – but there is significant debate in the scientific community about whether it exists.

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