Dwarf planet

Go down

Dwarf planet

Bài gửi  kosovohp on Thu Dec 16, 2010 6:49 pm

A dwarf planet is a celestial body orbiting the Sun that is massive enough to be spherical as a result of its own gravity but has not cleared its neighbouring region of planetesimals and is not a satellite. They are smaller than planets, but more massive than small solar system bodies. The term was adopted in 2006 by the International Astronomical Union (IAU) as a result of the increase in discoveries of trans-Neptunian objects that rivaled Pluto in size, and finally precipitated by the discovery of an even more massive object, Eris. The IAU currently recognizes five dwarf planets—Ceres (pictured), Pluto, Haumea, Makemake, and Eris. It is suspected that at least another 40 known objects in the Solar System are dwarf planets, but the number might be as high as 2,000.

discount bathroom vanities and sinks
Personal development books


Tổng số bài gửi : 283
Registration date : 15/09/2010

Xem lý lịch thành viên

Về Đầu Trang Go down

Về Đầu Trang

Permissions in this forum:
Bạn không có quyền trả lời bài viết