Jennifer Ouellette hosts Caleb Scharf - Director of Columbia University's multidisciplinary Astrobiology Center. They consider observational cosmology, X-ray astronomy, and more recently exoplanetary science. His latest book is Gravity's Engines: How Bubble-Blowing Black Holes Rule Galaxies, Stars, and Life in the Cosmos. Follow @caleb_scharf @JenLucPiquant
Great questions from the studio audience. They'll be posted tonight at virtuallyspeaking.us
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