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The Search for Extraterrestrial Intelligence (SETI) in the Optical Spectrum - looking for monochromatic and pulsed laser beacon signals

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Scholastic.com, the flagship Internet portal for the world

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Astronomy.com is for anyone who wants to learn more about astronomy events, cosmology, planets, galaxies, asteroids, astrophotography, the Big Bang, black holes, comets, constellations, eclipses, exoplanets, nebulae, meteors, quasars, observing, tele...

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