"Chris Impey is a University Distinguished Professor of Astronomy at the University of Arizona. He has over 210 refereed publications on observational cosmology

"Chris Impey is a University Distinguished Professor of Astronomy at the University of Arizona. He has over 210 refereed publications on observational cosmology, galaxies, and quasars, and his research has been supported by $20 million in NASA and NSF grants. He has won eleven teaching awards and has taught two online classes with over 300,000 enrolled and 4 million minutes of video lectures watched. Chris Impey is a past Vice President of the American Astronomical Society, and he has won its Education Prize. He’s also been an NSF Distinguished Teaching Scholar, Carnegie Council’s Arizona Professor of the Year, and a Howard Hughes Medical Institute Professor. He has written 70 popular articles on cosmology, astrobiology and education, two textbooks, a novel called Shadow World, and eight popular science books: The Living Cosmos, How It Ends, Talking About Life, How It Began, Dreams of Other Worlds, Humble Before the Void, Beyond: The Future of Space Travel, and Einstein’s Monsters: The Life and Times of Black Holes." -- https://www.as.arizona.edu/people/faculty/chris-impey https://www.as.arizona.edu/people/faculty/chris-impey Naturally, none of this makes him right... I have no judgement on that point. But does clear some of the ad hominem.