This Is The Massive Barge NASA Uses To Transport Space Rockets

Key Points:

• On April 1, 2026, over 18 million viewers watched the Artemis II mission launch from Kennedy Space Center, featuring astronauts Reid Wiseman, Victor Glover, Christina Koch, and Jeremy Hansen on a historic journey around the Moon.
• The Space Launch System's (SLS) massive core stage, measuring 212 feet tall and 27.6 feet in diameter, was transported from NASA's Michoud Assembly Facility in New Orleans to Florida via NASA's Pegasus Barge, specially modified to carry such oversized components.
• Pegasus, a 310-foot-long barge without its own propulsion, relies on tug boats to move and has a usable cargo deck of 240 feet, making the SLS core stage a tight but manageable fit for its voyages.
• Originally built in 1999 to transport Space Shuttle external fuel tanks, Pegasus was lengthened from 260 to 310 feet by replacing a 115-foot section with a 165-foot one to accommodate the larger and heavier SLS core stage.
• NASA has a long history of using barges like Pegasus, which replaced earlier vessels Poseidon and Orion used during the Apollo program, and Pegasus continues to support current and future Artemis missions, including Artemis III and IV.