SKED FOR THIS AFTERNOON AT 1:37 PM ET: United Launch Alliance to launch final Delta Heavy IV rocket March 29. Here’s how to watch live. “In addition to the Delta IV Heavy, ULA plans on retiring another one of its rockets: The workhorse Atlas V. The idea is to make way for the company’s new Vulcan Centaur, which launched on its first mission on Jan. 8, 2024 when it sent Astrobotic’s Peregrine lunar lander moonward. The Atlas V will keep flying through 2029, however, as it is already booked for missions to help develop Amazon’s Project Kuiper internet constellation and send Boeing’s Starliner crew capsule to the International Space Station on its first launch, slated for no earlier than May 1.”

Deltas and Atlases have a great history, but both rockets are older than me. The future is elsewhere.