Recent measurements of Pluto and Charon obtained by New Horizons, compared to Earth. Credit NASA
This graphic presents a view of Pluto and Charon, as they would appear if placed slightly above Earth’s surface and viewed from a great distance. Recent measurements obtained by New Horizons indicate that Pluto has a diameter of 2370 km, 18.5% that of Earth’s, while Charon has a diameter of 1208 km, 9.5% that of Earth’s.
Pluto at the edge of our solar system, on July 12. Credit NASA