Just how far is Betelgeuse from Earth?
I am finding distances ranging from 425 to 650 light years.
According to Wikipedia (I know, I know), the red giant will not be a
threat to Earth if it goes supernova:
"It is likely that Betelgeuse will become a supernova. Considering its size and age of 8.5 million years – old for its size class – it may explode within the next thousand years — if it hasn't already.
"Since its rotational axis is not toward Earth, Betelgeuse's supernova would not cause a gamma ray burst in the direction of Earth large enough to damage its ecosystem even from a relatively close proximity of 520 light years."