JWST peers inside a dying star's "exposed cranium"

JWST peers inside a dying star's "exposed cranium"

Whenever stars are born, their masses determines their fates. The (modern) Morgan–Keenan spectral classification system, with the surface temperature range of each star class shown above it, in kelvin. The overwhelming majority of stars today are M-class stars, with only 1 known O- or B-class star within 25 parsecs. Our Sun is a G-class star, along with about 5-10% of total stars. However, in the early Universe, almost all of the stars were O- …