dark matter

Miroslav Petrasko

An inky black sky full of stars is one of the most breathtaking views on Earth, but for most Americans the stars have dimmed because of artificial light.

Flickr / NASA's Marshall Space Flight Center

Science Friday Host Ira Flatow discusses the art of science journalism.  Flatow will be in Des Moines next week as part of Iowa Public Radio's Insight Series

Also, astrophysicist Philip Kaaret from the University of Iowa and Iowa State University astronomer Steven Kawaler explain dark matter.