Fred+S

Hi I am fred My proposal 3 3s Are the ion engines more powerful than solid rocket boosters? are ion engines more green/ http://www.dailygalaxy.com/my_weblog/2009/04/nasa-trumps-star-trek-ion-drive-live.html http://www.space.com/541-smart-1-ion-drive-fiction-fact.html http://www.moonminer.com/ion-drives.html http://dawn.jpl.nasa.gov/mission/index.asp http://www.moonminer.com/ion-drives.html NOTES ion thrusters are slower but can lead to a fast speed