arrived at Eartiniest brig sky. It  Evans on-scented ted it.

    “tisfying, I t t traveling formillions of years t at t moment as it reac t bit of sky and sees it. It just seems rig an event of t magnitudesnessed.”

    Supernovae do muc a sense of ypes (one of ticular, knoant to astronomy because it alical mass. For t can be used as a standard candle to measure te of the universe.

    In 1987 Saul Perlmutter at tings  out to find a more systematic metter devised a nifty system using sopicated computers andcal cameras. It automated supernovaing. telescopes could noake tures and let a computer detect telltale brigs t marked a supernova explosion. In five years, ecter and  Berkeley found forty-teursare finding supernovae elescope attcelevision,” Evans said ouc took all t of it.”

    I asked empted to adopt tecoo muc to of est supernova and smiled—“Ican still beat times.”

    tion t naturally occurs is “  be like if a star exploded nearby?” Ournearest stellar neigauri, 4.3 lig if to c oft event spreading across tipped from a giant can.  be like if co   off our bones? ouldpeople still go to  crops? ould anyone deliver to tores?

    eeks later, back in toions to Joensen, an astronomer at Dartmout travels out at t, but so does tructiveness, so you’d learnabout it and die from it in tant. But don’t ’s not going to happen.”

    For t of a supernova explosion to kill you, o be“ridiculously close”—probably en ligypes of radiation—cosmic rays and so on.” tains of spo