In general yes because Betelgeuse is only a single star, albeit a big one. Nebulae are huge clouds of gas within which stars form
Betelgeuse is much bigger than the Sun.
A Galaxy is far bigger than a nebula.
Yes, it has a radius about 1000 times the radius of the sun.
No, it is not.
Yes. Stars form within a nebula.
No. A nebula is a billion, if not more, times larger than our Sun
You can get the 666a to the M42 nebula, but you'll have to walk from there.
No. Betelgeuse is a red super-giant star, the red star at the left shoulder of Orion the Hunter.
betelgeuse
Yes.
Betelgeuse is one of the larger stars, while Barnard's star is just a little red dwarf star. So, yes- Betelgeuse is far larger than Barnard's.
Yes, Betelgeuse has a radius about 1200 times the size of the sun, and Antares is about 800 times the radius of the sun.