Astronomers have found an interesting new world orbiting the Sun—no, it’s not Planet Nine, but it’s still cool. Called 2015 KH162, it’s a small(ish) object orbiting the Sun far, far past Pluto. It’s ...

With Pluto spending 20 years of its 248-year orbit within the orbit of Neptune, you might expect that at some point, the two worlds could catastrophically collide. However, Pluto and Neptune never ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. This article is more than 4 years old. This global color ...

Pluto's continued existence owes much to the gravity of Jupiter and Neptune. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Pluto is lucky to ...

Venture to the outer edges of the solar system where decades-long missions push the limits of human engineering. From ...