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Lasting Propulsion And High Speeds For Deep Space Missions Provided by NEXT
2013-09-09 12:11:13

[ Watch The Video - Gridded Ion Thruster ] NASA Ion propulsion used to exist only in the imagination of science fiction writers. But after years of research and development NASA is poised to equip some of its most important deep space missions with ion engines that can nudge spacecraft using charged particles accelerated to blistering speeds of up to 90,000 miles per hour.  And in the vastness of space, those engines need to push continuously for years. NASA’s Evolutionary Xenon...


Word of the Day
grass-comber
  • A landsman who is making his first voyage at sea; a novice who enters naval service from rural life.
According to the OED, a grass-comber is also 'a sailor's term for one who has been a farm-labourer.'