“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 ...

The triple star system is sending comets, asteroids and meteors our way, and the number of interstellar objects entering the solar system will rise.

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 ...

Still that date will be one to circle on cosmic calendars. It takes Pluto slightly over 248 Earth years to orbit the sun, ...

Pictures may enliven us, but other data, such as information about magnetic fields, add a huge amount to our understanding of ...