Dark _________ is the only explanation for the structures of the early universe. Clumps of it led to ______________ in the early universe. Without it, the universe would have _____________________.

Answer 1

Dark matter is the only explanation for the structures of the early universe. Clumps of it led to the formation of galaxies and galaxy clusters in the early universe. Without it, the universe would have lacked the gravitational pull necessary to bring matter together, resulting in a much more homogeneous and structureless universe.