The program with comprehension here is a paradigm problem which arises from the general idea that stars are thermonuclear engines; if a star actually were a thermonuclear engine there would be no real reason to think it would heat up and cool off at odd times. Stars are basically plasma physics phenomena i.e. focal points of cosmic discharge. As they travel through regions of space with greater or lesser potential difference from themselves, they heat up and cool off.
Electric universe ping.
[somebody reboot the sun! riding season is here!]
Sounds like stars are actually both.
I want to believe you. Don’t you have a link or something?