Get the cosmic popcorn ready

The most spectacular show of our lifetimes…if it happens in our lifetimes. Or sometime in the next million years.

“It takes light from this star about 600 years to reach us, meaning that we’re actually observing the star as it was 600 years ago. If we do see it detonate in our sky any time soon, that means the star actually blew up sometime during the European Middle Ages, and light from the blast is just reaching Earth.”

[from National Geographic]

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