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rydan t1_iwwt98t wrote

How to lose all credibility. Dark anything by definition cannot heat anything. This is why we call it Dark.


answeryboi t1_iwx05dn wrote

Is all heating done via electromagnetic radiation?


FwibbFwibb t1_iwy8pr8 wrote

No, you can heat things up through gravity. How do you think stars heat up gas to the point of fusion?