Many people hold Pluto close in their hearts and refuse to abandon the assertion that it is a planet, although science ...

In August 2006, the International Astronomical Union made the controversial, but correct, decision to demote Pluto from its status as the ninth planet in ... sent some of his drawings of Mars ...

In 2006, updated research led to Pluto being controversially demoted to dwarf planet status by the International Astronomical Union. The reasoning was that Pluto's location in the far-flung Trans ...

If you could travel in a straight line at highway speed (approximately 60 mph or 100 km/h), the drive to Pluto, which is the outermost farthest-out dwarf planet that defines the edge of our solar ...

Astronomers have identified a new trans-Neptunian object, 2017 OF201, located far beyond Pluto. Its enormous size, comparable to dwarf planets, and highly elongated orbit provide valuable insights ...

For comparison, Pluto makes a lap around the sun every 248 Earth-years. The International Astronomical Union’s Minor Planet Center, which catalogs new moons and other small bodies in the solar ...

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 ...

It probably qualifies as a dwarf planet, the same classification as Pluto. Temporarily named 2017 OF201, it takes more than 24,000 years to travel around the sun just once along a highly ...

A new dwarf planet, temporarily named 2017 OF201, has been located in a distant orbit far beyond Pluto. The object, which may be a distant cousin of Pluto, has an orbital path so vast that it ...

It's possible the trans-Neptunian object, dubbed 2017 OF201, is large enough to qualify as a dwarf planet, making it an "extreme 'cousin' of Pluto," according to Institute for Advanced Study ...