Astronomy Colloquium: Sabine Hossenfelder
Date: Thu. October 17th, 2019, 3:00 pm-4:00 pmLocation: Sears 552
Dark matter – or what?
Sabine Hossenfelder (Franklin Institute for Advanced Studies)
In this talk I will explain (a) what observations speak for the hypothesis of dark matter, (b) what observations speak for the hypothesis of modified gravity, and (c) why it is a mistake to insist that either hypothesis on its own must explain all the available data. The right explanation, I will argue, is instead a suitable combination of dark matter and modified gravity, which can be realized by the idea that dark matter has a superfluid phase.