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.

NASA’s most recent photos of Pluto, captured by the New Horizons spacecraft, have revealed some of the most intriguing and ...

The TNO, which are described as minor planets that orbit the sun at a greater distance than Neptune, were found on the edge ...

OF201, a distant dwarf planet candidate with a rare orbit that questions the existence and stability of the Planet Nine theory.

For decades, Pluto was thought to be just another frozen rock spinning around the Sun, far from the action and mystery of the ...

OF201 is incredibly lightweight on a cosmic scale. Scientists estimate its mass is about 20,000 times less than Earth’s and ...

A giant conundrum has been found orbiting a teeny tiny red dwarf star just a fifth of the size of the Sun. Such small stars ...

U.S. and state officials say the consolidation of the public health agency’s vast trove of information could expose patients ...

Scientists have recently spotted a huge object far away in the cold outer reaches of our solar system. This ...

Astronomers using the James Webb Space Telescope have uncovered the fiery origin of WASP-121b, a distant exoplanet stretched ...

JWST's stunning image of NGC 346 shows that planets in the early universe didn’t form as quickly as theorists thought.