Did betelgeuse die

Answer 1

The death of a star is an event that stretches over hundreds of thousands, if not

millions, of years. The exception is the explosion of a star, which can happen in as

little as one day.

Betelgeuse is considered to be a dying star. We know for sure that it did not explode

at any time up until roughly the year 1370, because when we look at Betelgeuse in the

sky tonight, we see it as it was in 1370, and the light that left it at that time is just

reaching us now.

It might have exploded since then, but we won't know that until we can see it.

For example, if Betelgeuse exploded in 1776, then we'll see the explosion some

time around the year 2415 or 2420.