Pluto is the second largest dwarf planet known (after Eris).
In the image on the right are shown from left to right: Pluto, Charon, Nix and Hydra.
"Over the weekend, scientists discovered that it is a bit bigger than they expected. Previous estimates had put it somewhere between 715 and 746 miles, but new information suggests Pluto's radius is about 736 miles across, putting it solidly at the upper end of the estimate."
"At heights of about 11,000 feet, the Norgay Montes [on the right] most closely approximates the height of the Rockies."
"NASA scientists identified this newfound range of water-ice mountains [on the left] based on high-res images obtained by the New Horizons spacecraft."
"The mountain range is located in the dwarf planet's heart-shaped feature, called Tombaugh Regio after Pluto's discoverer, Clyde Tombaugh. The mountains rise to about the height of the Appalachian Mountains on Earth, which reach a maximum height of about 6,000 feet."
The recent history period dates from around 1,000 b2k to present.
Pluto was discovered on February 18, 1930, by Clyde Tombaugh.
- Deborah Netburn (14 July 2015). "Pluto is now the most distant object ever visited by humanity". Los Angeles, California USA: Los Angeles Times. Retrieved 2015-07-14.
- Jeff Moore (21 July 2015). "High resolution photo shows another set of ice mountains on Pluto". Mashable.com. Retrieved 2015-07-23.
- Miriam Kramer (21 July 2015). "High resolution photo shows another set of ice mountains on Pluto". Mashable.com. Retrieved 2015-07-23.