Ars Live, right now: Three space journos pick apart NASA’s Mars plans
I’m exceptionally thrilled, as part of the Ars Live series, to host a discussion with a few of the absolute best area press reporters in business this afternoon, May 29,…
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Under Right Conditions, Laser Beam Can Cast Shadow
In a brand-new paper released today in the journal Opticaphysicists explain how a laser beam can be made to cast a shadow that acts as any other regular shadow. Photographic…
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