Thanks!
I’m almost done processing M1, a massive supernova explosion remnant in the constellation of Taurus which was first seen by the Chinese in ancient times, around 1054.
When I’m done I’ll put it up.
BTW, I sent you a pm.
How do they form? It’s all about the infall. You get enough gas and dust crammed in there fast enough, you get an absolutely massive star. The problem is that there are believed to be theoretical limits on how much mass you can squash in there, before the stuff at the bottom of the pile ignites and blows off the rest.
There’s quite a bit we don’t know about stellar formation.