Light Race
S 213
Light Race
Copyright SAIC

As space travel becomes more routinSETI, the search for extraterrestrial intelligence, listens closely for faint signals from distant stars. If these signals were heard, what would it take to send them? According to Dr. George Swenson in Scientific American magazine, an array of contiguous transmitters 1.5 in diameter transmitting at 2.5 Hz would be necessary to send a signal powerful enough to be detected by present techniques.e, uses for in-space transportation might diversify. After practical mission requirements are met, creative minds will find other applications for such sophisticated vehicles as solar sails. A Lunar Cup race around the Moon and back to Earth piloted by small crews could use lunar gravity and careful sail angle adjustments to optimize their lap tim
Available Original:     Available Print:     NASA no.:
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