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Giant, mysterious laser beam appears over San Francisco
A massive green and blue laser beam was spotted in the San Francisco sky earlier this week ... know much about its purpose or origin – until now. Barrett Lyon, CEO of the aptly named MegaLasers ...
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Watch 'planetary parade' online for free on Jan. 25
Starting at 12:30 p.m. ET (1730 GMT) on Saturday (Jan. 25), astrophysicist Gianluca Masi of the Virtual Telescope Project ...