TOPEX/Poseidon over Earth

Mike Davis in front of the faring

TOPEX/Poseidon launch

The ocean-observing Sentinel-6 Michael Freilich satellite launched from Vandenberg Air Force Base in California aboard a SpaceX Falcon 9 rocket on Nov. 21, 2020 at 12:17 p.m. EST

Launch preparations are progressing! (11/21/01) Photos: Stacy Mitchell of John Hopkins APL/TIMED project

SpaceX Falcon 9 Rocket

This is an artist's concept of the Sentinel-6 Michael Freilich spacecraft.

The joint U.S.-European Sentinel-6 Michael Freilich is the next in a line of Earth-observing satellites that will collect the most accurate data yet on sea level and how it changes over time. With ...

The SpaceX Falcon 9 rocket carrying the Sentinel-6 Michael Freilich spacecraft lifts off from Space Launch Complex 4 at Vandenberg Air Force Base in California, Nov. 21, 2020, at 9:17 a.m. PST

Mission team members perform acoustic tests of the Sentinel-6 Michael Freilich satellite in a chamber outfitted with giant speakers that blast the spacecraft with sound. This is to ensure that the ...

TOPEX/Poseidon Mission to Planet Earth

TOPEX/Poseidon Line Drawing

OSTM/Jason-2 LRA

OSTM/Jason-2 Spacecraft

Jason-1 DORIS

Sea Surface Height

NASA and its U.S. and international partners have teamed up to launch a new Earth-observing satellite called Sentinel-6B that will measure sea surface height of most of the planet’s ocean. These ob...

The SpaceX Falcon 9 rocket, topped with the Sentinel-6 Michael Freilich satellite secured inside its payload fairing, is rolled to Space Launch Complex 4

Jason-3

Jason-3 Lifts Off!

Jason-1 Lithograph

Jason-1 launch images

For NASA scientist Severine Fournier, studying our planet knows no borders.

Inside half of the Delta Clam shell faring

Jason-1 in full flight configuration

OSTM/Jason-2 DORIS