This week, Congress held a public hearing on a topic that hasn’t been discussed openly in a congressional hearing in decades: unidentified flying objects. Yes, UFOs, or as the Pentagon is calling them, unidentified aerial phenomena, or UAPs. The hearing follows a report from the director of national intelligence released in June that said there were over 140 recorded sightings of UAPs that the military, like the name implies, could not identify. Chris Impey, a professor of astronomy at the University of Arizona, has been following these developments. He explained the significance of the hearing and the report to Marketplace’s Kimberly Adams.

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