Nano-Space Probes to Star Alpha Centauri by Laser-Sail ? Last month, SpaceWatchtower talkedabout Lasers in Space ? (posted November 13; reference Internet linksiderostat1991
Astronomical Calendar: 2017 December MORE INFO - CLICK ON IMAGE OR LINK --- LIKE THIS POST? - PLEASE SHARE! Link >>>siderostat1991
Greetings, hope everyone had a pleasant Thanksgiving. https://www.flickr.com/photos/42637403@N06/24735075528/in/photostream/josephrome77
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Comet PanSTARRS over Castle Hohenzollern, Germany - March 2013
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Public Group, 2129 membersWelcome to the Binocular Astronomy Group!Our group is devoted to binocular users who use their ...more