So, unlike red giants, red supergiants are simply bright, red stars. It so happens that they may be in the same evolutionary state, but it is also possible that they have moved on. For example, most massive stars will appear as red supergiants while helium is fused into carbon in the core.
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Electromagnetic waves<span> or </span>EM waves<span> are waves that are created as a result of vibrations between an electric field and a magnetic field.</span>
Prominent copper sulfide minerals include Cu2S (chalcocite) and CuS (covellite).
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number 3 lol