let me show you a bizarre sequence: [link to news.nationalgeographic.com]
So the mainstream does see that red giants turn into supernovae. (not just theory,but at least one observation)
At the center of supernovae, they have seen pulsars. Again,not just theory, but observations. (pulsar itself=theory,high frequency pulsations=fact)
They know that pulsars slow down radically. (theory is magnetic braking of this supermassive object,fact is measurable increase in period)
Red giants show pulsations (theory is redshift means shells of mass thrown off, observation is longer period pulsations)

So we have these pulsating stars (red giants), that finally show one huge pulse (supernova),at the center of which we see something with very rapid pulsations (pulsars), that quickly slow to longer period pulsations.

My question here: could this be cyclical? [link to www.thunderbolts.info]