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Falcon 9 Rocket Launches NASA's Ocean-Observing Satellite Into Space

The 3,175-pound Sentinel-6B continues global sea-level rise tracking after nearly 10 cm increase in 25 years, supporting climate monitoring with cross-calibrated data from predecessor mission.

  • On Nov. 17, SpaceX launched a Falcon 9 rocket topped with Sentinel-6B from Vandenberg Space Force Base at 9:21 p.m. PST.
  • Developed by NASA with U.S. and European partners, Sentinel-6B continues the U.S.-European Copernicus mission and follows Sentinel-6 Michael Freilich, launched Nov. 21, 2020.
  • Weighing 3,175 pounds, Sentinel-6B heads to a science orbit 830 miles above Earth; Falcon 9 upper stage deploys it about 57 minutes after liftoff, while the first-stage booster on its third flight landed at Landing Zone 4 at Vandenberg.
  • NASA will map about 90% of Earth's ice-free oceans every 10 days, extending a continuous dataset to almost 40 years, and Sentinel-6B is expected to be operational in the next couple of days.
  • With sea-level rise high on the global agenda, Sentinel-6B adds to a sea-level data record spanning over 30 years and will cross-calibrate with Sentinel-6 Michael Freilich in its first year, ESA officials wrote, noting oceans rose almost 10 cm in the past 25 years.
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Space broke the news in United States on Sunday, November 16, 2025.
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