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Sentinel-6/Jason-CS (Continuity of Service)

Viewing Posts from November 2025

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    First Stage Fueling Begins

    Mission managers polled “go” to begin fueling the SpaceX Falcon 9 with just under 40 minutes remaining until launch. Rocket Grade Kerosene, or RP1, now is loading into the SpaceX Falcon 9 rocket first stage booster, while liquid oxygen, or LOX, is loading into the rocket’s first stage. These propellants will power the stage’s nine Merlin engines. Propellant loading for the second stage will begin shortly.

    The first stage will propel the second stage and the Sentinel-6B satellite to its designed location before returning to Earth, where SpaceX plans to recover it at Landing Zone 4.

    Streaming Coverage Begins for Sentinel-6B Launch

    Night time image shows a white SpaceX rocket at the launch pad in California on Sunday, Nov. 16, 2025. Atop the rocket is a white payload fairing encapsulating NASA's Sentinel-6B spacecraft

    Live coverage is underway for launch of Sentinel-6B from Space Launch Complex 4 East at Vandenberg Space Force Base in California. Weather remains 90% favorable with thick clouds and cumulus clouds as the possible weather violations during the 12:21 a.m. EST (9:21 p.m. PST Sunday, Nov. 16) liftoff. Sentinel-6B is part of a series of […]

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    Sentinel-6B: Monitoring Earth’s Sea-Levels

    Artist’s concept illustration showing a gold-colored satellite at the center of the image with a black, star-filled background behind it. The Earth’s surface, blue and cloud-covered, fills the lower-left corner of the frame, from the center-left edge to the bottom-center of the frame. On the surface directly below the satellite, a spiral hurricane is visible. The satellite is shaped like a house with a peaked roof, viewed from an angle, with the pentagon-shaped front and left side side both facing the viewer. The satellite’s solar arrays form what looks like a very wide peaked roof atop the satellite, extending far beyond the side walls. Underneath the satellite, a silver cone-shaped instrument points down toward Earth. Another instrument on the front side, shaped like a silver frying pan, also faces toward Earth. In the upper right corner of the image is bright lens flare from the Sun, out of frame.

    The launch of Sentinel-6B will continue a joint mission between NASA and its European partners to monitor sea levels. This data is key to helping improve public safety, city planning, and protecting commercial and defense interests. Along with measuring global sea level rise and ocean circulation, the satellites record vertical profiles of atmospheric temperature and […]

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    NASA Shares Sentinel-6B Launch Milestones

    Image shows night time with a closeup view with a white payload fairing with NASA's Sentinel-6 Satellite inside.

    NASA and its launch partners are tracking several events during countdown and launch of Sentinel-6B aboard a SpaceX Falcon 9 rocket from Vandenberg Space Force Base in California. Time | Events (all times are approximate): -00:43:00 | NASA launch manager propellant load and launch readiness poll-00:38:00 | SpaceX launch director verifies “go” for propellant load-00:35:00 […]

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    Coverage Begins for Sentinel-6B Launch

    Night time image shows a white SpaceX rocket at the launch pad in California on Sunday, Nov. 16, 2025. Atop the rocket is a white payload fairing encapsulating NASA's Sentinel-6B spacecraft

    Coverage is underway for launch of the Sentinel-6B spacecraft, the newest international sea level measurement satellite mission jointly developed by NASA, ESA (European Space Agency), EUMETSAT (the European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), with funding support from the European Commission and technical support from the […]

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    NASA’s Sentinel-6B Spacecraft, Rocket Vertical on Pad Ahead of Launch

    Image shows sunny skies with a rocket with a NASA spacecraft atop standing vertical at the pad at Vandenberg Space Force Base in California on Sunday, Nov. 16, 2025

    The SpaceX rocket carrying the international Sentinel-6B satellite stands vertical on the launch pad at Space Launch Complex 4 East at Vandenberg Space Force Base in California. Liftoff is targeted for 12:21 a.m. EST Monday, Nov. 17 (9:21 p.m. PST Sunday, Nov. 16). Weather officials with the U.S. Space Force’s Space Launch Delta 30 predict […]

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    NASA, Partners ‘Go’ for Sentinel-6B Launch

    NASA, international partners, and SpaceX are moving forward with the launch of the Sentinel-6B satellite, which will measure sea levels, atmospheric temperature, and humidity worldwide. During the agency’s Launch Readiness Review at Vandenberg Space Force Base in California, NASA’s launch director and the launch team polled “go” for launch of Sentinel-6B. NASA will host a […]

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    NASA, Partners Nearing International Ocean Tracking Mission Launch

    Technicians are continuing launch preparations for Sentinel-6B, a satellite jointly developed by NASA and ESA (European Space Agency), that will measure sea level for nearly the entire globe, as well as atmospheric temperature and humidity ocean measurements. The team has completed nearly all their prelaunch milestones, including testing solar arrays, fueling the spacecraft, and encapsulating […]

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