Gregory's Server@gregeganSF - I wonder what will spell the end of LISA. The satellites do need propellant to stay on course. The proof-of-concept mission LISA Pathfinder used "micronewton thrusters" that shot out cold gas.
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 @gregeganSF - I wonder what will spell the end of LISA. The satellites do need propellant to stay on course. The proof-of-concept mission LISA Pathfinder used "micronewton thrusters" that shot out cold gas. 1 comment
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@johncarlosbaez @gregeganSF Spacecraft engineers have a tendency to do such a good job that their consumables often get stretched by factors of 2 or more!