Comet ISON photographed via a telescope on November 8, 2013. Photo by Adam Block/Mount Lemmon SkyCenter/University of Arizona While Americans cook their Thanksgiving turkeys on Thursday, a tiny comet called ISON will pass 684,000 miles above the surface…

.embed-container { position: relative; padding-bottom: 2.25%; padding-top: 30px; height: 0; overflow: hidden; max-width: 100%; height: auto; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }Elementary school science students in Leigh…