[jmacusa]

Some theorize Betelgeuse has already gone supernova. Along with Betelgeuse one of the most massive stars in the universe is Deneb in the constellation Cygnus also known as “The Northern Cross’’ seen on Summer evenings.

[ctdonath2]

"Some theorize Betelgeuse has already gone supernova. Along with"...

...every other star.

You'll see the first effects about 4 years from now.