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

The newly discovered object, named 2017 OF201, has a 25,000-year orbit and is believed to be a large contender for dwarf ...

28,756 people played the daily Crossword recently. Can you solve it faster than others?28,756 people played the daily Crossword recently. Can you solve it faster than others?

“Meanwhile, its perihelion—the closest point on its orbit to the Sun—is 44.5 times that of the Earth’s orbit, similar to Pluto's orbit.” This extreme orbit, which takes the object ...

"Meanwhile, its perihelion—the closest point on its orbit to the sun—is 44.5 times that of Earth's orbit, similar to Pluto's orbit." This extreme orbit, which takes the object approximately ...