Size, Orbit, and Strange Movements. Scientists estimate that 2017 OF201 is slightly smaller than Ceres, the smallest known dwarf planet in our solar system, which is about 950 kilometers wide.

Earth has a newly-discovered neighbor in the solar system. But the heavenly body – possibly a dwarf planet à la Pluto – isn't a frequent visitor. Located beyond Neptune, its extreme orbit ...

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 potential new dwarf planet has been discovered in the outer reaches of the solar system, and its existence poses the ...

Studies of 15 M-type stars have revealed new insights into the potential presence of exoplanets. A new study led by ...

A possible new dwarf planet has been discovered at the edge of our solar system, so far-flung that it takes around 25,000 years to complete one orbit around the sun. The object, known as 2017 ...

Earth has a newly-discovered neighbor in the solar system. But the heavenly body – possibly a dwarf planet à la Pluto – isn't a frequent visitor. Located beyond Neptune, its extreme orbit ...

How many Earth-like exoplanets orbit M dwarf stars (Red dwarf stars), which are smaller and cooler than our Sun? This is what ...

Image Credit: images of dwarf planets from NASA/JPL-Caltech; image of 2017 OF 201 from Sihao Cheng et al. DOWNLOAD PDF VERSION The Solar System has just gotten a new official member. Currently ...

Astronomers confirm TOI-5573 b, a rare, miniature Saturn-like planet orbiting a small star, challenging theories of planetary ...

OF201, the object belongs to the same all-star family as Pluto: dwarf planets. Its diameter, roughly 435 miles (700 km), is half Pluto’s, ...

So-called M dwarfs are the most common stars in the Milky Way. A research team has determined around which of them Earth-like ...