Jason-1 Spacecraft Animation

SpaceX Falcon 9 rocket with the Sentinel-6 Michael Freilich satellite is lifted to vertical at Space Launch Complex 4

This visualization shows total sea level change between 1992 and 2019, based on data collected from the TOPEX/Poseidon, Jason-1, Jason-2, and Jason-3 satellites. Blue regions are where sea level ha...

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

t - 7 minutes - Photo: Tom Shain

Jason-1 readies for launch in its bay at Vandenberg, AFB (10/31/01)

Jason-3 Animation

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

Jason-1 Launch - Artists Concept

TOPEX/Poseidon Line Drawing

Headed for Orbit!

These photos were taken during the Dual Payload Attach Fitting (DPAF) mating operation with Jason-1. (11/13/01) Photos: Scott Michel

Earth’s global sea levels are rising – and are doing so at an accelerating rate.

Growing up in landlocked Zimbabwe, NASA JPL engineer Shailen Desai was far from the ocean but still experienced its effects on the climate. Now, he is contributing to an international effort to tra...

Jason-1 on top of the DPAF

Fathoming the forces that determine global sea levels can be daunting. We present a guide to the basics of ocean surface topography.

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

TOPEX/Poseidon Artist's Concept

A look at how NASA is dealing with the threat of sea level rise to its coastal infrastructure.

Jason-1 launch images

Altimeter Mission Series

These photos were taken during the Payload Attach Fitting (PAF) mating operation with Jason-1. (11/14/01) Photos: Scott Michel

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

The Sentinel-6 Michael Freilich satellite sits in front of a testing chamber where mission team members tested whether the spacecraft could endure the loud sounds it will encounter during launch.

Jason-1 launch images

Jason-1 Line Drawing