Researchers found the object named 2017 OF201 while searching for "Planet Nine" - a hypothetical planet thought to exist ...

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.

James Webb Space Telescope observations suggest Pluto’s atmosphere is unlike any other in the solar system, confirming a 2017 ...

It had not been thought possible that such tiny, weak stars could provide the conditions needed to form and host huge planets.

A sweeping new ICE operation shows how Donald Trump’s focus on immigration is reshaping federal law enforcement.

Dozens of NASA's spaceflight missions that launched from Florida could be in jeopardy under a budget proposal from the Trump ...

Scientists say a new planetarium show about the Milky Way has helped them unlock one of the solar system’s many secrets.

The object’s aphelion the farthest point on the orbit from the Sun is more than 1,600 times that of the Earth’s orbit,” said ...

As it orbits the sun once every 25,000 years, the celestial body 2017 OF201 travels beyond the Kuiper Belt into a region ...

The new object is one of the most distant visible objects in our solar system. Astronomers have indeed discovered a potential new dwarf planet in the outer reaches of our solar system, far beyond ...

Their new study offers ... Denton explained, “Pluto and Charon are smaller, colder, and primarily made of rock and ice. When we accounted for their material strength, we discovered something ...