Our solar system used to have nine planets. Astronomer Mike Brown, also known as “the man who killed Pluto,” said he got hate mail from kids and obscene calls at 3 a.m. for years after his ...

If their calculations serve them correctly, Planet Nine would have a mass that is about 1.5 to 3 times that of Earth, at 500 times the distance between our home and the sun.

An initial analysis suggests the object could be a young, cold planet with a temperature near 120 degrees Fahrenheit, NASA ...

None of the rocky planets in our Solar System — Mercury, Venus, Earth and Mars — have rings. Can you picture Earth with a ring system, though? Think of what ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Left to right: Saturn, Uranus, and Jupiter show off their rings for various NASA spacecraft ...

One explanation: Planet Nine. There are quirks at the far edge of our solar system, in the form of disturbed objects in the Kuiper belt. ... the ring of icy debris where Pluto also resides, ...

Recent telescope data revealed that a small planet in the far reaches of our solar system has a dense ring round it. And scientists are baffled as to why. The planet, Quaoar, is one of roughly ...

Recent telescope data revealed that a small planet in the far reaches of our solar system has a dense ring round it, and scientists are baffled as to why. CNN values your feedback 1.

Big Number. 4,100. That’s how many kilometers Quaoar’s rings are from the dwarf planet’s core. That puts its rings at a distance of roughly 7.4 of the dwarf planet’s radii from its core ...

Our solar system used to have nine planets. Astronomer Mike Brown, also known as “the man who killed Pluto,” said he got hate mail from kids and obscene calls at 3 a.m. for years after his ...