TOPEX/Poseidon Type Orbiter Launch Aug. 10, 1992 Target Earth Objective Obtain global measurements of sea-surface heights using radar altimetry Learn more about TOPEX/Poseidon TOPEX / Poseidon Stories Explore All TOPEX / Poseidon Stories Article4 Min ReadNASA Analysis Sees Spike in 2023 Global Sea Level Due to El Niño Keep Exploring Discover More Topics From NASA James Webb Space Telescope Webb is the premier observatory of the next decade, serving thousands of astronomers worldwide. It studies every phase in the… Perseverance Rover This rover and its aerial sidekick were assigned to study the geology of Mars and seek signs of ancient microbial… Parker Solar Probe On a mission to “touch the Sun,” NASA's Parker Solar Probe became the first spacecraft to fly through the corona… Juno NASA’s Juno spacecraft entered orbit around Jupiter in 2016, the first explorer to peer below the planet's dense clouds to…