Florian Freistetter is an award-winning freelance science journalist and the author of several popular-science books on astronomy, including Isaac Newton: The Asshole Who Reinvented the Universe. He has also published more than five thousand articles on his blog, Astrodicticum Simplex, which is one of the most-read German-language science blogs. He writes a weekly column about mathematics for spektrum.de, as well as many other articles for various publications. Since 2015, he has produced and performed in humorous popular-science presentations, both in theaters in Austria, Germany, and Switzerland, and on the television show Science Busters. Having previously taught astronomy at the University of Heidelberg, Jena, and Vienna, he now hosts Sternengeschichten ("Star Stories"), a weekly podcast on astronomy.