Star clusters give birth like dogs, not humans, ALMA shows

We soon learned that stars and stellar systems varied tremendously. <img alt="" src="https://miro.medium.com/v2/resize:fit:700/0*nh8uSgKnvKJbd9UH" style="height:293px; width:700px" /> The (modern) Morgan–Keenan spectral classification system, with the temperature range of each star class shown above it, in kelvin. In terms of size, the smallest M-class stars are still about 12% the diameter of the Sun, but the largest main sequence stars can be dozens of times the Sun’s size, with evolved red supergiants (not shown) reaching hundreds or even 1000+ times the size of the Sun. A star’s (main sequence) lifetime, color, temperature, and luminosity are all primarily determined by a single property: mass. (<a href="https://commons.wikimedia.org/wiki/File:Morgan-Keenan_spectral_classification.svg" rel="noopener ugc nofollow" target="_blank">Credit</a>: LucasVB/Wikimedia Commons; Annotations: E. Siegel) <a href="https://medium.com/starts-with-a-bang/star-clusters-give-birth-like-dogs-not-humans-alma-shows-4eba14824e82">Visit Now</a>