This Thruster can Propel a Spacecraft Almost Indefinitely

Ion thrusters create small thrust levels in comparison to conventional chemical rockets, but achieve high specific impulse. They could be practical in the vacuum of space. SPACE S DEEPEST SECRETS Tuesdays 9/8c on Science http://www.sciencechannel.com/spaces-deepest-secrets/ Subscribe to Science Channel: http://bit.ly/SubscribeScience Watch full episodes: https://www.discoverygo.com/science/ SPACE S DEEPEST SECRETS shares the stories of the men and women who pushed their ingenuity and curiosity beyond the limits to uncover some of the most groundbreaking findings in the history of space exploration. Facebook: https://www.facebook.com/ScienceChannel Twitter: https://twitter.com/ScienceChannel