Watch a 4K video replay of Falcon Heavy’s static fire test (members only)

Joining the live video podcast on Friday, April 5, are Emilee Speck, space journalist with FOX Weather, and Stephen Clark, space reporter with Ars Technica. The show begins at 4 p.m. EDT (2000 UTC) on the Spaceflight Now YouTube channel.

NASA launch commentator George Diller called the Atlas 5 with Cygnus, his final liftoff as the voice of launch control before retirement next month. He has worked at the Kennedy Space Center for nearly four decades and served as the commentator for such memorable launches as Hubble, Cassini, Mars Pathfinder, the Spirit, Opportunity and Curiosity rovers and the final space shuttle mission.

Physicists are gearing up to send a re-engineered science instrument originally designed for lofty balloon flights high in Earth’s atmosphere to the International Space Station next week to broaden their knowledge of cosmic rays, subatomic particles traveling on intergalactic routes that could hold the key to unlocking mysteries about supernovas, black holes, pulsars and dark matter.