There’s a new frozen oddball orbiting the Sun, and it’s not your average space rock. It’s a planet—a minor one, to be ...

Astronomers have identified a new trans-Neptunian object, 2017 OF201, located far beyond Pluto. Its enormous size, comparable ...

At the very edge of our solar system, beyond the grasp of Neptune and even past the icy sprawl of Pluto’s domain, a new ...

A new dwarf planet, discovered beyond Neptune and described as Pluto's 'cousin,' could void the hypothesis of a Planet X in our solar system.

Image: NASA/JHUAPL/SwRI Start Slideshow It’s been 91 years since amateur astronomer Clyde Tombaugh first spotted ... of Pluto and how they compare to the 2015 photoshoot. Minor planets New ...

NASA's New Horizons spacecraft that flew past Pluto in July may have discovered clouds in the tiny planet's atmosphere, New Scientist reported. New Horizons scientists first discussed the ...

And in the past few years astronomers ... many astronomers will continue to see Pluto as one of the most fascinating objects in solar system, the Minor Planet Center's Spahr said.

At some point in the ancient past, the planet could have had an atmosphere roughly 40 times thicker than on Mars. In 2016, scientists announced that they might have spotted clouds in Pluto's ...

He’s involved in planning a mission to send a probe past ... do with Pluto. Should it be entered along with the other TNOs on the official list of our solar system’s “minor planets”?

Today, when tens of thousands of minor planets have been discovered (most residing in an "asteroid belt" between Mars and Pluto), not even the meanest of teachers would require students to learn ...