Plus, a farewell in space. On Today’s Episode:Trump Announces 25% Tariffs on Imported Cars and Car Parts, by Ana Swanson, Jack Ewing and Tony RommIntelligence Officials Face a Fresh Round of Questions About Signal Leak, by Julian E. Barnes and Robert JimisonElmo and Elon Musk Are Cited as G.O.P. Lawmakers Grill PBS and NPR, by Benjamin Mullin and Michael M. GrynbaumTrump Administration Abruptly Cuts Billions From State Health Services, by Apoorva Mandavilli, Margot Sanger-Katz and Jan HoffmanH.H.S. Scraps Studies of Vaccines and Treatments for Future Pandemics, by Carl Zimmer and Apoorva MandavilliFederal Government Detains International Student at Tufts, by Jenna Russell, Safak Timur, Anemona Hartocollis and Eduardo MedinaFarewell to Gaia, the Milky Way’s Cartographer, by Katrina MillerTune in every weekday morning. To get our full audio journalism and storytelling experience, download the New York Times Audio app — available to Times news subscribers on iOS — and sign up for our weekly newsletter.Tell us what you think at: theheadlines@nytimes.com.  Subscribe today at nytimes.com/podcasts or on Apple Podcasts and Spotify. You can also subscribe via your favorite podcast app here https://www.nytimes.com/activate-access/audio?source=podcatcher. For more podcasts and narrated articles, download The New York Times app at nytimes.com/app.