2 ms·
https://en.m.wikipedia.org/wiki/Stellar_classification https://en.m.wikipedia.org/wiki/Stellar_classification Answers most of your first two questions about cla
by craigching 3y ago
https://en.m.wikipedia.org/wiki/Stellar_classification https://en.m.wikipedia.org/wiki/Stellar_classification Answers most of your first two questions about classes of stars and stars that promote the possibility of life, though I don’t see Wolf-Rayet mentioned there.
- denton-scratch 3y agoWolf-Rayet stars radiate mostly in the ultra-violet, which isn't particularly conducive to life. They're also throwing off their atmospheres in waves, which makes for a very dense solar wind. These stars are young - 10 million years, and have reached the last phases of their lives; very large stars burn fast. I don't know whether 10 million years is enough time for live to develop.