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GRACE, twin satellites launched in March 2002, are making detailed measurements of Earth's gravity field which will lead to discoveries about gravity and Earth's natural systems. These discoveries could have far-reaching benefits to society and the world's population.

Orbiting twins - The GRACE satellites
Orbiting Twins - The GRACE satellites

GRACE Groundtrack - refreshes every 5 minutes
Current Orbit Data
 Mission Elapsed Time 
Days Hours
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Congratulations GRACE Team! The satellites completed their 12th year in orbit (67190 revs)!

GRACE in the News

Recent Satellite Data Inconclusive on Climate Change, Prompts New Mission

NASA's gravity field satellite mission GRACE has provided nine years worth of data about changes in Earth's gravity field. The analysis of the data from the two satellites on the mission was published in the Nature Geoscience Journal, which looks at the melting of our Earth's ice sheets.

Although the results of the analysis have concluded that the Earth's ice sheets are melting at the alarming rate of 300 billion tons per year, the report indicates that satellite data obtained of the Antarctic and Greenland ice sheets is insufficient to determine whether the acceleration of the melting ice will continue at the same rate, resulting in the need for more satellite analysis.

Read More

Go to the UTopia web site
Go to University of Texas web site


The GRACE mission is jointly implemented by NASA and DLR under
the NASA Earth System Science Pathfinder Program.

Last Modified: Mon Mar 17, 2014