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Distance from sun (avg.): 36 million miles Time it takes to orbit sun: 88 Earth days Size (diameter): 3,032 miles (two-fifths of Earth) Surface Temperature (range): -275 to 840 ºF Number of Moons: 0 Discovered: Known in ancient times Origin of Name: Roman god, the swift messenger
Predating The Solar System
Source: http://en.wikipedia.org/wiki/Solar_system [accessed 2009] You may have wondered if there was a tenth planet out there.
Our solar system is filled with a wide assortment of celestial bodies - the Sun itself, our eight planets , dwarf planets , and asteroids - and on Earth , life itself!
A magnetosphere is the area of space near an astronomical object in which charged particles are controlled by that object's magnetic field . [ 1 ] [ 2 ] Near the surface of the object, the magnetic field lines resemble those of an ideal magnetic dipole . Farther away from the surface, the field lines are significantly distorted by external currents, such as the solar wind . [ 3 ] [ 4 ] When speaking about the Earth, magnetosphere is typically used to refer to the outer layer of the ionosphere , [ 3 ] although some sources consider the ionosphere and magnetosphere to be separate. [ 2 ] [ edit ] History
This module serves as a background on the atmosphere.
About Dwarf Planets
NASA Dawn Spacecraft Returns Close-Up Image of Vesta July 18, 2011
Solar System - team curated