In episode #185, which Mike incorrectly identifies as episode #184, Mike welcomes noted astronomer Dr. Michelle Thaller, to discuss the obvious differences between sounding certain and being correct. Dr. Thaller, a noted astronomer with an enormous brain, tries to help Mike understand the enormity of the cosmos, and explain why the universe contained 200 billion galaxies just four years ago, and then 2 trillion galaxies just a few weeks later, and then back down to a few hundred billion as of last week. It's enough to make your head spin, but between Mike's gigantic cranium and Dr. Thaller's enormous brain, we finally unlock the secrets of How the Universe Works…