Technicians transfer the Sentinel-6B spacecraft from the NASA hangar to the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Thursday, Sept. 25, 2025. Sentinel-6B will undergo detailed inspections, tests, and fueling in a cleanroom as it prepares for a November launch on a SpaceX Falcon 9 rocket. The spacecraft is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans. Sentinel-6B also will extend the record of atmospheric temperatures, begun by Sentinel-6 Michael Freilich, out to a decade.

Technicians test the solar arrays during processing of the Sentinel-6B spacecraft during prelaunch operations at the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Thursday, Oct. 16, 2025. Sentinel-6B will undergo detailed inspections, tests, and fueling in a cleanroom as it prepares for a November launch on a SpaceX Falcon 9 rocket. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans.

Technicians test the solar arrays during processing of the Sentinel-6B spacecraft during prelaunch operations at the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Thursday, Oct. 16, 2025. Sentinel-6B will undergo detailed inspections, tests, and fueling in a cleanroom as it prepares for a November launch on a SpaceX Falcon 9 rocket. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans.

Technicians test the solar arrays during processing of the Sentinel-6B spacecraft during prelaunch operations at the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Thursday, Oct. 16, 2025. Sentinel-6B will undergo detailed inspections, tests, and fueling in a cleanroom as it prepares for a November launch on a SpaceX Falcon 9 rocket. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans.

Technicians use a crane during processing of the Sentinel-6B spacecraft on its work stand during prelaunch operations at the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Thursday, Oct. 16, 2025. Sentinel-6B will undergo detailed inspections, tests, and fueling in a cleanroom as it prepares for a November launch on a SpaceX Falcon 9 rocket. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans.

Technicians use a crane during processing of the Sentinel-6B spacecraft on its work stand during prelaunch operations at the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Thursday, Oct. 16, 2025. Sentinel-6B will undergo detailed inspections, tests, and fueling in a cleanroom as it prepares for a November launch on a SpaceX Falcon 9 rocket. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans.

Technicians test the solar arrays during processing of the Sentinel-6B spacecraft during prelaunch operations at the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Thursday, Oct. 16, 2025. Sentinel-6B will undergo detailed inspections, tests, and fueling in a cleanroom as it prepares for a November launch on a SpaceX Falcon 9 rocket. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans.

Technicians use a crane during processing of the Sentinel-6B spacecraft on its work stand during prelaunch operations at the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Thursday, Oct. 16, 2025. Sentinel-6B will undergo detailed inspections, tests, and fueling in a cleanroom as it prepares for a November launch on a SpaceX Falcon 9 rocket. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans.

Technicians test the solar arrays during processing of the Sentinel-6B spacecraft during prelaunch operations at the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Thursday, Oct. 16, 2025. Sentinel-6B will undergo detailed inspections, tests, and fueling in a cleanroom as it prepares for a November launch on a SpaceX Falcon 9 rocket. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans.

Technicians test the solar arrays during processing of the Sentinel-6B spacecraft during prelaunch operations at the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Thursday, Oct. 16, 2025. Sentinel-6B will undergo detailed inspections, tests, and fueling in a cleanroom as it prepares for a November launch on a SpaceX Falcon 9 rocket. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans.

Technicians use a crane during processing of the Sentinel-6B spacecraft on its work stand during prelaunch operations at the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Thursday, Oct. 16, 2025. Sentinel-6B will undergo detailed inspections, tests, and fueling in a cleanroom as it prepares for a November launch on a SpaceX Falcon 9 rocket. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans.

Technicians use a crane to place the Sentinel-6B spacecraft onto a work stand ahead of prelaunch operations at the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Thursday, Sept. 25, 2025. Sentinel-6B will undergo detailed inspections, tests, and fueling in a cleanroom as it prepares for a November launch on a SpaceX Falcon 9 rocket. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans and will extend out to a decade the record of atmospheric temperatures begun by Sentinel-6 Michael Freilich.

Technicians use a crane to place the Sentinel-6B spacecraft onto a work stand ahead of prelaunch operations at the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Thursday, Sept. 25, 2025. Sentinel-6B will undergo detailed inspections, tests, and fueling in a cleanroom as it prepares for a November launch on a SpaceX Falcon 9 rocket. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans and will extend out to a decade the record of atmospheric temperatures begun by Sentinel-6 Michael Freilich.

Technicians use a crane to place the Sentinel-6B spacecraft onto a work stand ahead of prelaunch operations at the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Thursday, Sept. 25, 2025. Sentinel-6B will undergo detailed inspections, tests, and fueling in a cleanroom as it prepares for a November launch on a SpaceX Falcon 9 rocket. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans and will extend out to a decade the record of atmospheric temperatures begun by Sentinel-6 Michael Freilich.

Technicians use a crane to place the Sentinel-6B spacecraft onto a work stand ahead of prelaunch operations at the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Thursday, Sept. 25, 2025. Sentinel-6B will undergo detailed inspections, tests, and fueling in a cleanroom as it prepares for a November launch on a SpaceX Falcon 9 rocket. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans and will extend out to a decade the record of atmospheric temperatures begun by Sentinel-6 Michael Freilich.

Technicians use a crane to place the Sentinel-6B spacecraft onto a work stand ahead of prelaunch operations at the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Thursday, Sept. 25, 2025. Sentinel-6B will undergo detailed inspections, tests, and fueling in a cleanroom as it prepares for a November launch on a SpaceX Falcon 9 rocket. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans and will extend out to a decade the record of atmospheric temperatures begun by Sentinel-6 Michael Freilich.

Technicians use a crane to place the Sentinel-6B spacecraft onto a work stand ahead of prelaunch operations at the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Thursday, Sept. 25, 2025. Sentinel-6B will undergo detailed inspections, tests, and fueling in a cleanroom as it prepares for a November launch on a SpaceX Falcon 9 rocket. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans and will extend out to a decade the record of atmospheric temperatures begun by Sentinel-6 Michael Freilich.

Technicians use a crane to place the Sentinel-6B spacecraft onto a work stand ahead of prelaunch operations at the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Thursday, Sept. 25, 2025. Sentinel-6B will undergo detailed inspections, tests, and fueling in a cleanroom as it prepares for a November launch on a SpaceX Falcon 9 rocket. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans and will extend out to a decade the record of atmospheric temperatures begun by Sentinel-6 Michael Freilich.

Technicians use a crane to place the Sentinel-6B spacecraft onto a work stand ahead of prelaunch operations at the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Thursday, Sept. 25, 2025. Sentinel-6B will undergo detailed inspections, tests, and fueling in a cleanroom as it prepares for a November launch on a SpaceX Falcon 9 rocket. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans and will extend out to a decade the record of atmospheric temperatures begun by Sentinel-6 Michael Freilich.

Technicians use a crane to place the Sentinel-6B spacecraft onto a work stand ahead of prelaunch operations at the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Thursday, Sept. 25, 2025. Sentinel-6B will undergo detailed inspections, tests, and fueling in a cleanroom as it prepares for a November launch on a SpaceX Falcon 9 rocket. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans and will extend out to a decade the record of atmospheric temperatures begun by Sentinel-6 Michael Freilich.

Technicians install protective solar array covers for the Sentinel-6B spacecraft inside the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Friday, Sept. 26, 2025. Sentinel-6B will undergo detailed inspections, tests, and fueling in a cleanroom as it prepares for a November launch on a SpaceX Falcon 9 rocket. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans and will extend out to a decade the record of atmospheric temperatures begun by Sentinel-6 Michael Freilich.

Technicians install protective solar array covers for the Sentinel-6B spacecraft inside the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Friday, Sept. 26, 2025. Sentinel-6B will undergo detailed inspections, tests, and fueling in a cleanroom as it prepares for a November launch on a SpaceX Falcon 9 rocket. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans and will extend out to a decade the record of atmospheric temperatures begun by Sentinel-6 Michael Freilich.

Technicians install protective solar array covers for the Sentinel-6B spacecraft inside the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Friday, Sept. 26, 2025. Sentinel-6B will undergo detailed inspections, tests, and fueling in a cleanroom as it prepares for a November launch on a SpaceX Falcon 9 rocket. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans and will extend out to a decade the record of atmospheric temperatures begun by Sentinel-6 Michael Freilich.

Technicians install protective solar array covers for the Sentinel-6B spacecraft inside the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Friday, Sept. 26, 2025. Sentinel-6B will undergo detailed inspections, tests, and fueling in a cleanroom as it prepares for a November launch on a SpaceX Falcon 9 rocket. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans and will extend out to a decade the record of atmospheric temperatures begun by Sentinel-6 Michael Freilich.

Technicians install protective solar array covers for the Sentinel-6B spacecraft inside the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Friday, Sept. 26, 2025. Sentinel-6B will undergo detailed inspections, tests, and fueling in a cleanroom as it prepares for a November launch on a SpaceX Falcon 9 rocket. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans and will extend out to a decade the record of atmospheric temperatures begun by Sentinel-6 Michael Freilich.

Technicians install protective solar array covers for the Sentinel-6B spacecraft inside the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Friday, Sept. 26, 2025. Sentinel-6B will undergo detailed inspections, tests, and fueling in a cleanroom as it prepares for a November launch on a SpaceX Falcon 9 rocket. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans and will extend out to a decade the record of atmospheric temperatures begun by Sentinel-6 Michael Freilich.

Technicians install protective solar array covers for the Sentinel-6B spacecraft inside the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Friday, Sept. 26, 2025. Sentinel-6B will undergo detailed inspections, tests, and fueling in a cleanroom as it prepares for a November launch on a SpaceX Falcon 9 rocket. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans and will extend out to a decade the record of atmospheric temperatures begun by Sentinel-6 Michael Freilich.

Packed in its shipping container, the Sentinel-6B spacecraft, a collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), arrives by truck to the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Wednesday, Sept. 17, 2025. The second of two spacecraft that constitutes the Sentinel-6/Jason-CS (Continuity of Service) mission, Sentinel-6B will measure sea surface height and provide crucial information to help improve coastal planning, enabling local and state governments to make informed decisions about protecting coastal infrastructure, real estate, and energy sites. Launch is targeted for no earlier than November on a SpaceX Falcon 9 from Vandenberg.

Packed in its shipping container, the Sentinel-6B spacecraft, a collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), arrives by truck to the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Wednesday, Sept. 17, 2025. The second of two spacecraft that constitutes the Sentinel-6/Jason-CS (Continuity of Service) mission, Sentinel-6B will measure sea surface height and provide crucial information to help improve coastal planning, enabling local and state governments to make informed decisions about protecting coastal infrastructure, real estate, and energy sites. Launch is targeted for no earlier than November on a SpaceX Falcon 9 from Vandenberg.

Packed in its shipping container, the Sentinel-6B spacecraft, a collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), arrives by truck to the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Wednesday, Sept. 17, 2025. The second of two spacecraft that constitutes the Sentinel-6/Jason-CS (Continuity of Service) mission, Sentinel-6B will measure sea surface height and provide crucial information to help improve coastal planning, enabling local and state governments to make informed decisions about protecting coastal infrastructure, real estate, and energy sites. Launch is targeted for no earlier than November on a SpaceX Falcon 9 from Vandenberg.

Technicians transfer the Sentinel-6B spacecraft from the NASA hangar to the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Wednesday, Sept. 24, 2025. Sentinel-6B will undergo detailed inspections, tests, and fueling in a cleanroom as it prepares for a November launch on a SpaceX Falcon 9 rocket. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans and will extend out to a decade the record of atmospheric temperatures begun by Sentinel-6 Michael Freilich.

Technicians transfer the Sentinel-6B spacecraft from the NASA hangar to the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Wednesday, Sept. 24, 2025. Sentinel-6B will undergo detailed inspections, tests, and fueling in a cleanroom as it prepares for a November launch on a SpaceX Falcon 9 rocket. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans and will extend out to a decade the record of atmospheric temperatures begun by Sentinel-6 Michael Freilich.

Technicians transfer the Sentinel-6B spacecraft from the NASA hangar to the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Wednesday, Sept. 24, 2025. Sentinel-6B will undergo detailed inspections, tests, and fueling in a cleanroom as it prepares for a November launch on a SpaceX Falcon 9 rocket. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans and will extend out to a decade the record of atmospheric temperatures begun by Sentinel-6 Michael Freilich.

Technicians install multi-layer insulation on the Sentinel-6B spacecraft on a work stand inside the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Thursday, Oct. 23, 2025. Critical for protecting spacecraft from extreme temperatures and environmental conditions in space, the thin, reflective multi-layer insulation will create a barrier to help reduce heat transfer through radiation while Sentinel-6B is in orbit. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans. NASA is targeting launch no earlier than Sunday, Nov. 16, 2025, on a SpaceX Falcon 9 rocket from Space Launch Complex 4 East at Vandenberg.

Technicians install multi-layer insulation on the Sentinel-6B spacecraft on a work stand inside the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Thursday, Oct. 23, 2025. Critical for protecting spacecraft from extreme temperatures and environmental conditions in space, the thin, reflective multi-layer insulation will create a barrier to help reduce heat transfer through radiation while Sentinel-6B is in orbit. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans. NASA is targeting launch no earlier than Sunday, Nov. 16, 2025, on a SpaceX Falcon 9 rocket from Space Launch Complex 4 East at Vandenberg.

Technicians install multi-layer insulation on the Sentinel-6B spacecraft on a work stand inside the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Thursday, Oct. 23, 2025. Critical for protecting spacecraft from extreme temperatures and environmental conditions in space, the thin, reflective multi-layer insulation will create a barrier to help reduce heat transfer through radiation while Sentinel-6B is in orbit. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans. NASA is targeting launch no earlier than Sunday, Nov. 16, 2025, on a SpaceX Falcon 9 rocket from Space Launch Complex 4 East at Vandenberg.

Technicians install multi-layer insulation on the Sentinel-6B spacecraft on a work stand inside the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Thursday, Oct. 23, 2025. Critical for protecting spacecraft from extreme temperatures and environmental conditions in space, the thin, reflective multi-layer insulation will create a barrier to help reduce heat transfer through radiation while Sentinel-6B is in orbit. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans. NASA is targeting launch no earlier than Sunday, Nov. 16, 2025, on a SpaceX Falcon 9 rocket from Space Launch Complex 4 East at Vandenberg.

Technicians install multi-layer insulation on the Sentinel-6B spacecraft on a work stand inside the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Thursday, Oct. 23, 2025. Critical for protecting spacecraft from extreme temperatures and environmental conditions in space, the thin, reflective multi-layer insulation will create a barrier to help reduce heat transfer through radiation while Sentinel-6B is in orbit. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans. NASA is targeting launch no earlier than Sunday, Nov. 16, 2025, on a SpaceX Falcon 9 rocket from Space Launch Complex 4 East at Vandenberg.

Technicians install multi-layer insulation on the Sentinel-6B spacecraft on a work stand inside the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Thursday, Oct. 23, 2025. Critical for protecting spacecraft from extreme temperatures and environmental conditions in space, the thin, reflective multi-layer insulation will create a barrier to help reduce heat transfer through radiation while Sentinel-6B is in orbit. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans. NASA is targeting launch no earlier than Sunday, Nov. 16, 2025, on a SpaceX Falcon 9 rocket from Space Launch Complex 4 East at Vandenberg.

Technicians install multi-layer insulation on the Sentinel-6B spacecraft on a work stand inside the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Thursday, Oct. 23, 2025. Critical for protecting spacecraft from extreme temperatures and environmental conditions in space, the thin, reflective multi-layer insulation will create a barrier to help reduce heat transfer through radiation while Sentinel-6B is in orbit. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans. NASA is targeting launch no earlier than Sunday, Nov. 16, 2025, on a SpaceX Falcon 9 rocket from Space Launch Complex 4 East at Vandenberg.

Technicians install multi-layer insulation on the Sentinel-6B spacecraft on a work stand inside the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Thursday, Oct. 23, 2025. Critical for protecting spacecraft from extreme temperatures and environmental conditions in space, the thin, reflective multi-layer insulation will create a barrier to help reduce heat transfer through radiation while Sentinel-6B is in orbit. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans. NASA is targeting launch no earlier than Sunday, Nov. 16, 2025, on a SpaceX Falcon 9 rocket from Space Launch Complex 4 East at Vandenberg.

Technicians install multi-layer insulation on the Sentinel-6B spacecraft on a work stand inside the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Thursday, Oct. 23, 2025. Critical for protecting spacecraft from extreme temperatures and environmental conditions in space, the thin, reflective multi-layer insulation will create a barrier to help reduce heat transfer through radiation while Sentinel-6B is in orbit. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans. NASA is targeting launch no earlier than Sunday, Nov. 16, 2025, on a SpaceX Falcon 9 rocket from Space Launch Complex 4 East at Vandenberg.

Technicians and engineers encapsulate the Sentinel-6B spacecraft within a protective payload fairing inside the Astrotech Space Operations facility at Vandenberg Space Force Base in California, on Monday, Nov. 10, 2025. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans. NASA is targeting launch no earlier than Sunday, Nov. 16, on a SpaceX Falcon 9 rocket from Space Launch Complex 4 East at Vandenberg.

Technicians and engineers encapsulate the Sentinel-6B spacecraft within a protective payload fairing inside the Astrotech Space Operations facility at Vandenberg Space Force Base in California, on Monday, Nov. 10, 2025. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans. NASA is targeting launch no earlier than Sunday, Nov. 16, on a SpaceX Falcon 9 rocket from Space Launch Complex 4 East at Vandenberg.

Technicians and engineers encapsulate the Sentinel-6B spacecraft within a protective payload fairing inside the Astrotech Space Operations facility at Vandenberg Space Force Base in California, on Monday, Nov. 10, 2025. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans. NASA is targeting launch no earlier than Sunday, Nov. 16, on a SpaceX Falcon 9 rocket from Space Launch Complex 4 East at Vandenberg.

Technicians and engineers encapsulate the Sentinel-6B spacecraft within a protective payload fairing inside the Astrotech Space Operations facility at Vandenberg Space Force Base in California, on Monday, Nov. 10, 2025. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans. NASA is targeting launch no earlier than Sunday, Nov. 16, on a SpaceX Falcon 9 rocket from Space Launch Complex 4 East at Vandenberg.

Technicians and engineers encapsulate the Sentinel-6B spacecraft within a protective payload fairing inside the Astrotech Space Operations facility at Vandenberg Space Force Base in California, on Monday, Nov. 10, 2025. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans. NASA is targeting launch no earlier than Sunday, Nov. 16, on a SpaceX Falcon 9 rocket from Space Launch Complex 4 East at Vandenberg.

Technicians and engineers encapsulate the Sentinel-6B spacecraft within a protective payload fairing inside the Astrotech Space Operations facility at Vandenberg Space Force Base in California, on Monday, Nov. 10, 2025. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans. NASA is targeting launch no earlier than Sunday, Nov. 16, on a SpaceX Falcon 9 rocket from Space Launch Complex 4 East at Vandenberg.

Technicians and engineers encapsulate the Sentinel-6B spacecraft within a protective payload fairing inside the Astrotech Space Operations facility at Vandenberg Space Force Base in California, on Monday, Nov. 10, 2025. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans. NASA is targeting launch no earlier than Sunday, Nov. 16, on a SpaceX Falcon 9 rocket from Space Launch Complex 4 East at Vandenberg.

Technicians and engineers encapsulate the Sentinel-6B spacecraft within a protective payload fairing inside the Astrotech Space Operations facility at Vandenberg Space Force Base in California, on Monday, Nov. 10, 2025. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans. NASA is targeting launch no earlier than Sunday, Nov. 16, on a SpaceX Falcon 9 rocket from Space Launch Complex 4 East at Vandenberg.

Technicians and engineers encapsulate the Sentinel-6B spacecraft within a protective payload fairing inside the Astrotech Space Operations facility at Vandenberg Space Force Base in California, on Monday, Nov. 10, 2025. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans. NASA is targeting launch no earlier than Sunday, Nov. 16, on a SpaceX Falcon 9 rocket from Space Launch Complex 4 East at Vandenberg.

Technicians and engineers encapsulate the Sentinel-6B spacecraft within a protective payload fairing inside the Astrotech Space Operations facility at Vandenberg Space Force Base in California, on Monday, Nov. 10, 2025. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans. NASA is targeting launch no earlier than Sunday, Nov. 16, on a SpaceX Falcon 9 rocket from Space Launch Complex 4 East at Vandenberg.

Technicians integrate the Sentinel-6B spacecraft to the payload adapter inside the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Tuesday, Nov. 4, 2025. The payload adapter is part of the system that connects Sentinel-6B to the second stage of the SpaceX Falcon 9 rocket that will carry it to orbit. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans. NASA is targeting launch no earlier than Sunday, Nov. 16, on a SpaceX Falcon 9 rocket from Space Launch Complex 4 East at Vandenberg.

Technicians integrate the Sentinel-6B spacecraft to the payload adapter inside the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Tuesday, Nov. 4, 2025. The payload adapter is part of the system that connects Sentinel-6B to the second stage of the SpaceX Falcon 9 rocket that will carry it to orbit. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans. NASA is targeting launch no earlier than Sunday, Nov. 16, on a SpaceX Falcon 9 rocket from Space Launch Complex 4 East at Vandenberg.

Technicians integrate the Sentinel-6B spacecraft to the payload adapter inside the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Tuesday, Nov. 4, 2025. The payload adapter is part of the system that connects Sentinel-6B to the second stage of the SpaceX Falcon 9 rocket that will carry it to orbit. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans. NASA is targeting launch no earlier than Sunday, Nov. 16, on a SpaceX Falcon 9 rocket from Space Launch Complex 4 East at Vandenberg.

Technicians integrate the Sentinel-6B spacecraft to the payload adapter inside the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Tuesday, Nov. 4, 2025. The payload adapter is part of the system that connects Sentinel-6B to the second stage of the SpaceX Falcon 9 rocket that will carry it to orbit. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans. NASA is targeting launch no earlier than Sunday, Nov. 16, on a SpaceX Falcon 9 rocket from Space Launch Complex 4 East at Vandenberg.

Technicians integrate the Sentinel-6B spacecraft to the payload attach fitting inside the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Wednesday, Nov. 5, 2025. The payload attach fitting is part of the system that connects Sentinel-6B to the second stage of the SpaceX Falcon 9 rocket that will carry it to orbit. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans. NASA is targeting launch no earlier than Sunday, Nov. 16, on a SpaceX Falcon 9 rocket from Space Launch Complex 4 East at Vandenberg.

Technicians integrate the Sentinel-6B spacecraft to the payload attach fitting inside the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Wednesday, Nov. 5, 2025. The payload attach fitting is part of the system that connects Sentinel-6B to the second stage of the SpaceX Falcon 9 rocket that will carry it to orbit. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans. NASA is targeting launch no earlier than Sunday, Nov. 16, on a SpaceX Falcon 9 rocket from Space Launch Complex 4 East at Vandenberg.

Technicians integrate the Sentinel-6B spacecraft to the payload attach fitting inside the Astrotech Space Operations payload processing facility at Vandenberg Space Force Base in California on Wednesday, Nov. 5, 2025. The payload attach fitting is part of the system that connects Sentinel-6B to the second stage of the SpaceX Falcon 9 rocket that will carry it to orbit. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans. NASA is targeting launch no earlier than Sunday, Nov. 16, on a SpaceX Falcon 9 rocket from Space Launch Complex 4 East at Vandenberg.

Workers transport the international Sentinel-6B satellite, encapsulated in the SpaceX Falcon 9 payload fairing, from the Astrotech Space Operations Facility to Space Launch Complex 4 East at Vandenberg Space Force Base in California on Wednesday, Nov. 12, 2025. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans. NASA is targeting Sunday, Nov. 16, 2025, for launch.

Workers transport the international Sentinel-6B satellite, encapsulated in the SpaceX Falcon 9 payload fairing, from the Astrotech Space Operations Facility to Space Launch Complex 4 East at Vandenberg Space Force Base in California on Wednesday, Nov. 12, 2025. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans. NASA is targeting Sunday, Nov. 16, 2025, for launch.

Workers transport the international Sentinel-6B satellite, encapsulated in the SpaceX Falcon 9 payload fairing, from the Astrotech Space Operations Facility to Space Launch Complex 4 East at Vandenberg Space Force Base in California on Wednesday, Nov. 12, 2025. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans. NASA is targeting Sunday, Nov. 16, 2025, for launch.

Workers transport the international Sentinel-6B satellite, encapsulated in the SpaceX Falcon 9 payload fairing, from the Astrotech Space Operations Facility to Space Launch Complex 4 East at Vandenberg Space Force Base in California on Wednesday, Nov. 12, 2025. A collaboration between NASA, ESA (European Space Agency), EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA), Sentinel-6B is designed to measure sea levels down to roughly an inch for about 90% of the world’s oceans. NASA is targeting Sunday, Nov. 16, 2025, for launch.