Out past Neptune are countless small icy and rocky bodies called Trans-Neptunian Objects (TNOs), and many of these have moons ...

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 ...

Unlike how scientists believe Earth's moon formed billions of years ago, Pluto and its biggest moon, Charon, didn't have a messy breakup. New computer simulations show the primitive dwarf planet ...

The ringed gas giant Saturn has officially replaced Jupiter as the planet in our solar system with the most moons. The ...

“New Horizons shattered a major paradigm of planetary science,” says Alan Stern, the mission’s principal investigator. “Pluto turns out to have as much complexity as Mars or Earth, so much so that I ...

Pluto is too far away from Earth to be seen with the naked eye ... But on Charon, Pluto's nearest moon, they found this most familiar of geological features. There was more, on Pluto itself ...

The return trip to the Earth can take from 35 to 52 minutes ... and requires a good telescope to spot. PhotoPhoto of Pluto and its moon Charon, as seen with the Hubble Space Telescope in 1994.

The moon orbits directly into the Earth’s shadow cast into outer space ... books including '100 Things to See in the Night Sky' and 'How to Teach Grown-Ups About Pluto.' He can be reached at: ...

A total lunar eclipse will occur along with the March 2025 full moon. Here's why it's called a Blood Moon and the best time to see it in Arizona.