As explained in a pre-press paper [PDF] titled “Discovery of a dwarf planet candidate in an extremely wide orbit: 2017 OF201” ...

Earth’s sister planet reaches greatest western elongation and dichotomy as the waxing Moon slides along the ecliptic in the ...

A newly identified dwarf planet, named 2017 OF201, has been discovered in the distant outer reaches of the solar system.

Scientists hunting for the hypothetical Planet Nine have discovered a potential new dwarf planet, 2017 OF201, in the outer ...

A team of international scientists recently published the discovery of nine new hot Jupiter exoplanets in The Astronomical ...

Venus is concealing at least three city-killer asteroids that could strike Earth in weeks without warning, potentially ...

The small world was found during a search for the hypothetical Planet Nine, and astronomers say the next time it will reach ...

U.S. astronomers hunting for "Planet Nine" have instead stumbled on what appears to be a new dwarf planet in the solar system ...

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

A recent study has cast a concerning spotlight on a previously underestimated celestial threat: asteroids co-orbiting Venus.

Scientists warn that over the next five billion years, there’s a tiny chance Earth could be flung from the solar system by a ...