Reference Article

from Wikipedia, the free encyclopedia


Pluto, designated (134340) Pluto, in the Minor Planet Center catalogue, is the second-largest known dwarf planet in the solar system.

It orbits between 29 and 49 AU from the Sun, and was the first Kuiper Belt Object to be discovered.

Approximately one-fifth the mass of the Earth's Moon, Pluto is primarily composed of rock and ice.

It has an eccentric orbit that is highly inclined with respect to the planets and takes it closer to the Sun than Neptune during a portion of its orbit.

Note: This article excerpts material from the Wikipedia article "Pluto", which is released under the GNU Free Documentation License.

See the following related content on ScienceDaily:

Related Videos

last updated on 2015-04-24 at 6:01 pm EDT

Pluto's Fifth Moon Discovered

Pluto's Fifth Moon Discovered

Newsy (July 11, 2012) Astronomers found Pluto's 5th moon. NASA will fly to Pluto in 2015.
Powered by
'Vulcan' Leads Pluto Moon Vote

'Vulcan' Leads Pluto Moon Vote

Reuters (Feb. 22, 2013) 'Vulcan' has big lead in bid to name Pluto's newly discovered moons.
Powered by
What's Up for July 2014

What's Up for July 2014

NASA (July 1, 2014) Spot Pluto and see the Milky Way and planets all month long. Video provided by NASA
Powered by
Pluto Still Not A Planet, But Fans Might Be Winning Debate

Pluto Still Not A Planet, But Fans Might Be Winning Debate

Newsy (Oct. 2, 2014) Headlines about Pluto being a planet again are a little premature, but the public's attachment to the dwarf planet may win out in the end. Video provided by Newsy
Powered by

Related Stories

Share This

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.


Breaking News:
from the past week

In Other News

... from

Science News

Health News

Environment News

Technology News


Free Subscriptions

Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile

Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?

Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins