**Dr. Priyamvada Natarajan** discusses fundamental knowns and unknowns of astrophysics --and what is most important for the public to understand. In addition to her research, Dr. Natarajan is seriously committed to improving public understanding of science. This effort is represented in her many public talks and interviews, her 2016 book, Mapping the Heavens, and numerous articles and book reviews for the general public. In a July 2016 visit with Science for the Public, Dr. Natarajan talked about the historical resistance to a number of concepts and discoveries in astrophysics --all of which are fully accepted today-- as described in her book, Mapping the Heavens. Photo: [Lagoon Nebula](https://commons.wikimedia.org/w/index.php?curid=3075995 "nebula") [By ESO/VPHAS+ team](http://www.eso.org/public/images/eso1403a/ "") - CC BY 4.0,
Forum Network
Free online lectures: Explore a world of ideas