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SpaceX Launches CRS-33 Dragon With New Boost Kit for Extended ISS Stay

NASA will begin ISS reboost burns using Dragon’s trunk-mounted system in September.

A SpaceX Falcon 9 topped with a cargo Dragon spacecraft launches from Cape Canaveral Space Force Station's Space Launch Complex 40 on Sunday, Aug. 24, 2025. (Courtesy/SpaceX)

Overview

  • The cargo Dragon lifted off at 2:45 a.m. EDT on Aug. 24 from Cape Canaveral and is tracking a 7:30 a.m. EDT Aug. 25 docking to the Harmony forward port.
  • Dragon is carrying more than 5,000 pounds of supplies and research, including 3D metal printing, bioprinted liver tissue, bone-forming stem cells, and medical-implant materials.
  • The spacecraft will remain at the station until December, marking SpaceX’s first long-duration cargo Dragon mission planned for roughly five months.
  • A trunk-mounted boost kit with an independent propellant system will feed two Draco engines to perform periodic reboosts starting in September, with NASA expecting Dragon to handle the majority of orbit-raising while docked.
  • Data from these demonstrations will inform NASA’s planned U.S. Deorbit Vehicle and operational concepts for a controlled ISS end-of-life around 2030 to 2031.