Web Results
Pluto's composition is not very well known since it is so far away from Earth. Astronomers believe that it's mostly made of rock and frozen methane, water, nitrogen and carbon dioxide. This is probably covered by a thin atmosphere of methane gas.

en.wikipedia.org/wiki/Pluto

Pluto (minor-planet designation: 134340 Pluto) is a dwarf planet in the Kuiper belt, a ring of ... Like other Kuiper belt objects, Pluto is primarily made of ice and rock and is ... Unknown to Lowell, his surveys had captured two faint images of Pluto on March 19 and April 7, 1915, but they were not recognized for what they were.

coolcosmos.ipac.caltech.edu/ask/163-What-is-Pluto-made-of-

Pluto is thought to be made of mostly ice. It probably also has a small rocky core which might contain some metals. The ice on the surface of Pluto is made of ...

www.space.com/18562-what-is-pluto-made-of.html

Feb 19, 2016 ... NASA's New Horizons spacecraft captured this image of an intriguing "X" on Pluto's icy Sputnik Planum region; the X probably marks a spot ...

www.space.com/43-pluto-the-ninth-planet-that-was-a-dwarf.html

Jul 22, 2015 ... Pluto, originally considered the ninth planet, was classified as a dwarf planet. ... conditions until 2015, when NASA's New Horizons space probe made a close flyby of Pluto. .... What Is Pluto Made Of? How Was Pluto Formed?

www.universetoday.com/13875/what-is-pluto-made-up-of

No longer a planet, Pluto is just a member of the Kuiper Belt; a collection of icy objects that extend out past the orbit of Neptune. If you brought Pluto.

www.nasa.gov/audience/forstudents/k-4/stories/nasa-knows/what-is-pluto-k4.html

It is made of the same things that stars are made of. In fact, Jupiter would have become a star if it were about 80 times bigger. What Is Jupiter Like? The planet is  ...

scienceline.ucsb.edu/getkey.php?key=3990

Pluto does contain rock, but much of its surface is thought to be made up of frozen ... and guess what Pluto is made out of, we haven't been able to visit Pluto yet.

planetfacts.org/what-is-pluto-made-of

Pluto may no longer be considered a planet, but it will always be one in people's minds. It is a good thing that Pluto is located in the colder and da.

www.loc.gov/rr/scitech/mysteries/pluto.html

The International Astronomical Union (IAU) downgraded the status of Pluto to that ... You may wonder what that means, “not clearing its neighboring region of other ... There are sixteen known pre-discoveries, with the oldest being made by the ...