Researchers believe that 2017 OF201’s highly eccentric orbit points to a chaotic origin, possibly caused by a gravitational ...

For the dwarf planet candidate, one trip around the sun takes over 24,000 years. Its orbit challenges a proposed path for a hypothetical Planet Nine.

A team of astronomers believe they may have discovered a new dwarf planet—just like Pluto—on the edge of our solar system.

Pluto's discovery was widely celebrated ... "In some ways, Pluto's more of a planet than some of the other established ...

They did, and the discovery of Planet X was announced on March ... with nitrogen and methane in the atmosphere. 5 - Pluto has an ionized tail like a comet — probably from nitrogen from its ...

Discovery of 2017OF201, a large trans-Neptune Object, challenges previous beliefs about the Kuiper Belt and hints at the ...

Upon the discovery of its existence in 1930, Pluto enjoyed ... Just like there are binary stars, Lyra says Earth and its moon would newly be considered a binary planet system.

We are less than two weeks away from the 95th anniversary of the discovery of Pluto ... does too," Grundy said. "Pluto's got everything I like in a planet, in spades. It's got a satellite system.

Instead of a typical planet-moon setup ... This idea worked for Earth, but icy worlds like Pluto didn’t fit the same mold. Pluto and Charon are too cold and too small for that molten chaos.

Pluto, discovered in 1930 ... inch telescope — could work depending on light pollution. The planet appears as a small, star-like point. Pluto is best viewed in late July, but can be observed ...

When Pluto was discovered by Clyde Tombaugh in 1930 ... it was deemed large enough to be considered a planet. You may like New dwarf planet discovered beyond the orbit of Neptune Vesta, the ...