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If you aren't in a hurry, why not try solar sails.
Let the winds of the Sun push you into the Cosmos. The idea has
a good deal of respectability and today there are any number of
designs waiting to be tested. Mind you, they're all tiny payload
craft flying on giant plastic sails of thinnest gossamer, unlike this
bugger which looks like it might shift an inch a century with a good
wind. |
