Pluto is too far away from Earth to be seen with the naked eye ... Before New Horizons, the best images of Pluto revealed nothing more than a few light and dark patches. The best Hubble Telescope ...

A blue atmosphere, smooth areas, and youthful mountain ranges - this dwarf planet is full of surprises. When NASA's New Horizons probe flew past Pluto in July 2015, the images it returned astonished ...

Pluto is probably best known for being a demoted planet. In 2006, the International Astronomical Union stripped it of its ...

"It's half Pluto's size and 12% of its mass, which makes it much more similar to the Earth's moon than any other moon in the solar system." For comparison, our moon is just a quarter of the size ...

This week is the best time of year to spot Pluto in the ... see with amateur astronomy instruments! As shown in the image below, Pluto looks similar to the background stars. The only exception ...

(Photo by NASA/JHUAPL/SWRI via Getty ... [+] Images) Researchers studying Pluto and Charon have long drawn a parallel to how Earth got its moon. The prevailing thought is that a Mars-sized body ...

Scientists think the larger moons of Pluto and Earth formed through a collisional ... which had already provided the first closeup images of Pluto, flew past Arrokoth, another Kuiper Belt object.

But Pluto and Charon are different from Earth and the Moon, too – they are both smaller (the Moon is 3,475 kilometers across) and much, much colder, made up of rock and ice. When the researchers ...

The models used to understand the giant impact that formed Earth's Moon work very well ... of the two bodies perfectly. New Horizons image of Pluto (right) and Charon (left).

Unlike how scientists believe Earth's moon formed billions of years ago, Pluto and its biggest moon ... the spacecraft images revealed a geologically diverse world, with mountains, ice sheets ...