The Water Cooler

Watch Water Levitated By Sound

So apparently sound can make water fly. Or levitate anyway. Awesome. h/t: brainpickings.org

Here’s What A 2,000 Year-Old Lecture Hall Looks Like Kom el Dikka, a 2nd century AD Roman amphitheater in Alexendria,

Landing On Mars: The Terrifying Physics Approaching Mars at over 13,000 mph, the descent only slows to around 1000 mph