Why is it bulging on the left side? Is it pregnant?................
Something to do with it being about to explode.
It’s a supernova candidate in the near (astronomically) future.
Could blow up tomorrow, or a 100,000 years from now.
Apparently due to large convection currents within the star.
The sun has them too but smaller and confined nearer to the surface.
Betelgeuse’s size affects their size they are much larger,
the currents can reach further down into the interior of the star and in turn,
make the star bubble out at its surface to a much greater distance.