Scientists had previously believed that no celestial bodies existed in the vast, empty section of space beyond Neptune.

Astronomers have found a new minor planet beyond Pluto. This object, named 2017 OF201, is quite large. It orbits far from the ...

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A new dwarf planet, discovered beyond Neptune and described as Pluto's 'cousin,' could void the hypothesis of a Planet X in ...

It must have cleared all other celestial bodies, except its own moons ... where thousands of objects sit beyond the orbit of Neptune. Pluto, therefore, is not the gravitationally dominant object ...

Beyond Pluto and Charon, these findings could revolutionize ... long-standing questions about the origins and evolution of celestial bodies across the cosmos. Note: Materials provided above ...

Skywatchers worldwide are in for a charming cosmic display before the Sun rises Friday, as three celestial bodies will appear in close conjunction. The arrangement of Venus, Saturn and a slender ...

For decades, it captivated imaginations with its icy surface and distant orbit beyond Neptune ... Despite the change, Pluto remains a beloved celestial body, and some astronomers still debate ...