Agree it's an exaggeration, but still seems fascinating - that photons with the right energies go straight through, as if the matter wasn't there?! Does sound q

Agree it's an exaggeration, but still seems fascinating - that photons with the right energies go straight through, as if the matter wasn't there?! Does sound quite dark-matter-ish, but as someone else pointed out, the temperatures seem off. I prefer to believe dark matter is mostly something we don't yet quite understand about gravity/matter/space.