Eric Chaisson." Eric holds a doctorate in astrophysics from Harvard University, where he spent ten years on the Faculty of Arts and Sciences. For five years, Eric was a Senior Scientist and Director of Educational Programs at the Space Telescope Science Institute and Adjunct Professor of Physics at Johns Hopkins University. He then joined Tufts University, where he is now Professor of Physics, Professor of Education, and Director of the Wright Center for Innovative Science Education. He has written nine books on astronomy, which have received such literary awards as the Phi Beta Kappa Prize, two American Institute of Physics Awards, Harvard's Smith-Weld Prize for Literary Merit, and the Walter P. Kistler Book Award. He has published more than 100 scientific papers in professional journals, and has also received Harvard's Bok Prize for original contributions to astrophysics. "Steve McMillan." Steve holds a bachelor's and master's degree in Mathematics from Cambridge University and a doctorate in Astronomy from Harvard University. He held post-doctoral positions at the University of Illinois and Northwestern University, where he continued his research in theoretical astrophysics, star clusters, and numerical modeling. Steve is currently Distinguished Professor of Physics at Drexel University and a frequent visiting researcher at Princeton's Institute for Advanced Study and the University of Tokyo. He has published more than 50 scientific papers in professional journals.

With Astronomy Today, Sixth Edition, trusted authors Eric Chaisson and Steve McMillan communicate their excitement about astronomy and awaken students to the universe around them. Thoroughly updated, the revised edition focuses on the process of scientific discovery and scientific method, making “how we know what we know” a more integral part of the text with attention to clearly and concisely presenting scientific terms to the non-science student. In addition, the authors have taken great care to identify places where they could clarify or simplify an explanation, better define a term, and discuss the process used in making a discovery. This edition offers the most complete and innovative learning package available for one- or two-semester introductory courses in astronomy.