Scientists get their maths wrong and so rather admit it, they make up dark matter.
Meanwhile back in the real world, scientists get their models wrong (because they're mortals working with limited information), admit it, and amend their models.
Scientists get their maths wrong and so rather admit it, they make up dark matter.
Meanwhile back in the real world, scientists get their models wrong (because they're mortals working with limited information), admit it, and amend their models.