Why doesn't dark matter clump strongly in the center of galaxies, since it doesn't feel either radiation pressure or the Pauli exclusion effect?
Why was the Cosmic Microwave Background (CMB) released at a blackbody temperature of 3000K rather than 30,000K?
Is there physical evidence to distinguish between the expansion of space and an anthropocentric universe?
Does the recent news of "ten times more galaxies" imply that there is correspondingly less dark matter?
What would evidence of stars and galaxies significantly older than 13.8 billion years old look like? In what parts of space has it not been found?
Why did astronomers believe most or all stellar black holes had masses no greater than 15 solar masses?
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