From Stargazers to Starships The motion of Earth in space, Newtonian mechanics, spaceflight and spacecraft, and a math refresher, on a high school level. This site deals with the world of gravity--of massive planets and stars, and the way spaceflight is achieved despite their stron http://www-spof.gsfc.nasa.gov/stargaze/Sintro.htm Nasa.gov~Site InfoWhoisTrace RouteRBL Check
The Exploration of the Earth's Magnetosphere Looks at the hot gases which fill most of space which are ruled by magnetic and electric forces rather than by gravity. The polar aurora, the radiation belts, the solar wind, magnetic storms, "space weather", cosmic radiation--this is the site http://www-spof.gsfc.nasa.gov/Education/Intro.html Nasa.gov~Site InfoWhoisTrace RouteRBL Check
