Quote:
Originally Posted by Gorilla
The composition of dark matter is still unknown so I'm not sure why you're saying its being overly complicated. Stars also produce a lot more than just heat we can detect most of the by-products of nuclear fission, the most easily detectable one being every wavelength on the spectrum of electromagnetic radiation (not just visible light). We can also see various stages of stars collapsing (neutron stars for example). Any object we cant see but has a strong gravitational pull isn't necessarily dark matter. Singularities are another thing that exhibits that type of behavior. Dark matter is an assigned designation of the differences in mass and and gravitational interaction with visible matter. Its hardly simple though. Even with gravitational lensing we still hardly know anything about its nature.
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How would a big star sized rock be detected from a far enough distance where only the brightest stars can seen by powerful microscopes other than seeing what is detectable gravitate towards it?