<p>This episode’s question is: what is dark matter?  If you have feedback or a topic suggestion you can <a href= "mailto:%20info@astronomyin5.com">email us</a>.</p>

S01E16: What Is The Doppler Effect?

Join us to explore the universe. Each episode we tackle one question and ask Stuart Robbins, a professional astronomer, to help us understand the topic in under 5 minutes without a script.  The show is a crossover of the Exposing PseudoAstronomy podcast and the award winning The Reality Check podcast.