Ex Astris Scientia

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toebeanz
fuckyeahfluiddynamics

During the recent Perseid shower, photographer Petr Horálek caught an awesome timelapse of an exploding meteor and the vortex ring it created. This is a type of persistent train left when meteors pass through the upper atmosphere. The exact physics are not well understood because such events are difficult to observe; catching them at all is basically just happenstance. But one interpretation is that we’re seeing trails of plasma left by the ionization of parts of the meteor. When the meteor hits the upper atmosphere, there’s an extremely strong hypersonic shock wave. The jump in temperature across that shock wave is enough to pull atoms apart, creating a plasma. The train left by this meteor’s demise was faintly visible even an hour after the fireball. (Image credit: P. Horálek, video version; via APOD; submitted by Andrea S.)

mahovina
rabbittrabbitt

i honestly c a n n o t believe that in the year 2016 some fuckos tried to pay gillian anderson half (HALF) of david duchovny’s pay for the x-files reboot. listen we all know nobody’s turning out to see david duchovny sit around like an unbaked croissant when gillian anderson’s RIGHT THERE being exceptional in every regard, and yet a whole sucession of people clearly approved this fuckery. somebody line up every single yahoo involved in that decision and let me physically fight each one. i know gillian anderson doesn’t need me to defend her honor but i’ve got two fists and a lot of pent-up anger. i’m ready

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