“Dwarf” planet at the edge of the solar system, US researchers claim to have discovered
The object, named 2017 OF201, has a diameter of about 700 kilometers, according to a preliminary study - It is three times as far from Earth as Neptune
A six-planet solar system in perfect synchrony has been found in the Milky Way
A pair of planet-hunting satellites — NASA’s Tess and the European Space Agency’s Cheops — teamed up for the observations
Mysterious Earth-sized planet could be hiding in plain sight in our Solar System
If such a planet exists, researchers say it would have a mass about 1.5 to...3 times that of Earth!