Archived As of September 20, 2026, the ALLATRA TV website is no longer actively maintained and remains available for archival and educational purposes only. It contains videos uploaded since 2013, including materials submitted by ALLATRA volunteers and participants in ALLATRA events. This archived content does not necessarily reflect official views of ALLATRA. For ALLATRA’s official positions, see ALLATRA.org, and ALLATRA MEDIA for scientific material relevant to ALLATRA’s work.

Black Holes. At the Core of Scientific Search | Prof. Chris Impey

Black Holes. At the Core of Scientific Search | Prof. Chris Impey “Science is just about asking questions, some of which have answers and many do not. But the asking of questions is how it all starts,” says Chris Impey, researcher, scientist, and Distinguished Professor of Astronomy at the University of Arizona. Black Holes. At the Core of Scientific Search | Prof. Chris Impey Black Holes. At the Core of Scientific Search | Prof. Chris Impey Black Holes. At the Core of Scientific Search | Prof. Chris Impey