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President Barack Obama's pledge to seek a worldwide ban on weapons in space marks a dramatic shift in U.S. policy while posing the tricky issue of defining whether a satellite can be a weapon.
Moments after Obama's inauguration last week, the White House website was updated to include policy statements on a range of issues, including a pledge to restore U.S. leadership on space issues and seek a worldwide ban on weapons that interfere with military and commercial satellites.
Originally posted by Majic
You Can Have My Orbital Kinetic Kill Vehicle When You Pry It From My Cold, Dead Fingers
Not only is such a ban likely to prove impractical and unenforceable for nations other than the U.S., it probably wouldn't stop space weapon programs in the U.S. either.
Pure political fluff, in my opinion.
Spacecraft use chemical energy to take off and gain considerable kinetic energy to reach orbital velocity. This kinetic energy gained during launch will remain constant while in orbit because there is almost no friction. However it becomes apparent at re-entry when the kinetic energy is converted to heat.