sci-universe: Here’s something really cool: Electric Sail (E-sail) propulsion system, invented by Dr. Pekka Janhunen of the Finnish Meteorological Institute, has been funded by NASA. It’s exciting for many reasons. Once operational, its technology is expected to revolutionize the space …

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sasstijean: The best kind of mail to receive on a rainy day. I used to have a bunch of these books… don’t know what happened to them.  Maybe my brother took them, or they’re in the attic.