Add Yahoo as a preferred source to see more of our stories on Google. Astronomers discover potential dwarf planet 2017 OF201 beyond Neptune. (photo credit: Sihao Cheng et al) The researchers said 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 ...

These icy bodies orbit the sun just like the major planets, yet they follow their own rules, often traveling along elongated ...

Scientists have recently spotted a huge object far away in the cold outer reaches of our solar system. This 700-kilometer-wide object could be a new dwarf planet. It was discovered traveling a ...

A composite image showing the five dwarf planets recognized by the International Astronomical Union, plus the newly discovered trans-Neptunian object 2017 OF201. The TNO is potentially large enough to ...

Aging stars can completely destroy their planets. When a star reaches the end of its life on the main sequence, it goes ...

Right angle Illustration of 2M1510 showing the orbits of the two brown dwarfs (in blue) and that of the planet (in orange). (Courtesy: ESO/L Calçada) The first strong evidence for an exoplanet with an ...

WASHINGTON >> Scientists have identified an object about 435 miles wide inhabiting the frigid outer reaches of our solar system that might qualify as a dwarf planet, spotting it as it travels on a ...