Update: April 9, 1:20 p.m. TheDelta IV Heavy rocketis scheduled to launch on Tuesday at 12:53 p.m.

ET from Space Launch Complex-37 at Cape Canaveral Space Force Station in Florida.

The broadcast will begin at around 12:23 p.m. ULAs Delta IV Heavy rocket is the last of the Delta family of medium-to-heavy launch vehicles.

The final launch of Delta IV Heavy.

The final launch of Delta IV Heavy.Photo: ULA

After the Delta chapter comes to a close, ULAs new Vulcan Centaur rocket is designed to take over.

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NASA’s SpaceX Crew 9 members inside the International Space Station.

NASA’s SpaceX Crew-9 members pose together for a portrait inside the vestibule between the International Space Station and the SpaceX Dragon crew spacecraft. Clockwise from left, are NASA astronauts Butch Wilmore, Nick Hague, and Suni Williams, and Roscosmos cosmonaut Aleksandr Gorbunov.

NASA astronauts Butch Wilmore and Suni Williams, Boeing’s Crew Flight Test Commander and Pilot respectively, inspect safety hardware aboard the International Space Station.

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