NASA’s New Horizons mission has taken humanity closer than ever to understanding the mysterious dwarf planet, Pluto. In 2015, ...

In 2006, the International Astronomical Union demoted Pluto to one of dozens of dwarf planets. After its discovery in 1930, Pluto was declared the ninth planet in our solar system and quickly ...

NASA’s most recent photos of Pluto, captured by the New Horizons spacecraft, have revealed some of the most intriguing and ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to ...

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 discovered a new dwarf planet, named 2017 OF201, far beyond Pluto’s orbit.It takes 25,000 years to orbit the sun—much longer than Pluto’s 248 years. This makes it one of the ...

A newly discovered object in the outer solar system, 2017 OF201, is the largest found in more than a decade. The post Another Dwarf Planet in Our Solar System? appeared first on Sky & Telescope.

Scientists with the Institute for Advanced Study’s School of Natural Sciences say they have found a possible dwarf planet that they have dubbed an "extreme cousin" of Pluto. They say that the possible ...

Scientists have identified a new minor planet beyond Pluto, enhancing our knowledge of the solar ... 820 kilometres (approximately 290 to 510 miles), placing it amongst known dwarf planets and ...

At roughly 435 miles wide, 2017 OF201 could qualify as a dwarf planet, the same designation Pluto has had since its demotion from ninth planet in 2006. "Even though advances in telescopes have ...

It includes dwarf planets like Pluto and thousands of smaller icy bodies. Scientists are intrigued by its peculiar structure: while it spans a great distance, it is surprisingly empty in some areas ...

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 ...