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GRACE-FO in Falcon 9 on Launchpad

The SpaceX Falcon 9 that will carry GRACE-FO to orbit sits on the launchpad.

The SpaceX Falcon 9 rocket is seen with the NASA/German Research Centre for Geosciences GRACE Follow-On spacecraft onboard, Monday, May 21, 2018, at Space Launch Complex 4E at Vandenberg Air Force Base in California. The mission will measure changes in how mass is redistributed within and among Earth's atmosphere, oceans, land and ice sheets, as well as within Earth itself. GRACE-FO is sharing its ride to orbit with five Iridium NEXT communications satellites as part of a commercial rideshare agreement.

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Photo Credit: NASA/Bill Ingalls

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GRACE-Follow On (GRACE-FO) is a satellite mission that launched in May 2018. GRACE-FO will continue the work of the GRACE satellite mission tracking Earth's water movement around the globe. These d...
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Video for the GRACE-FO mission.
Tracking Water from Space
A map of groundwater storage trends for Earth's 37 largest aquifers using GRACE data, showing depletion and replenishment in millimeters of water per year. 
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A map of groundwater storage trends for Earth's 37 largest aquifers using GRACE data, showing depletion and replenishment in millimeters of water per year.
Map of Groundwater Storage Trends for Earth's 37 Largest Aquifers
An artist's rendering of the twin GRACE-FO spacecraft.
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An artist's rendering of the twin GRACE-FO spacecraft in orbit around Earth.
GRACE-FO Rendering
The rocket carrying GRACE-FO lifts off into a blue sky, with the Pacific Ocean beneath it.
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The rocket carrying GRACE-FO lifts off into a blue sky, with the Pacific Ocean beneath it.
GRACE-FO Launch, Sky and Sea
NASA scientists used GRACE data to identify regional trends of freshwater movement, and combined that information with data from other satellites, climate models and precipitation measurements to d...
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The Gravity Recovery and Climate Experiment, or GRACE mission, used precise measurements of the motions of two spacecraft in Earth’s orbit to track the movement of water through the oceans, land, and atmosphere.
For 15 Years, GRACE Tracked Freshwater Movements Around the World
This animation shows the annual water storage changes over the U.S. from GRACE from 2003 - 2013.
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This animation shows the annual water storage changes over the U.S. from GRACE from 2003 - 2013.
Annual Water Storage Changes over the U.S. from GRACE
GRACE-FO, a collaboration between NASA and German Research Centre for Geosciences (GFZ), launched from Vandenberg Air Force Base on on May 22, 2018.
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A vertical image of the rocket launching in front of a blue sky.
GRACE-FO Launches
The GRACE mission launched in 2002, changing our understanding of Earth.
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The GRACE mission launched in 2002, changing our understanding of Earth.
15 Years of GRACE
Many of today’s most pressing climate science challenges hinge on knowing how and where water is moving on Earth. GRACE-FO will continue the successful partnership between NASA and the German Resea...
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Image of the spacecraft in orbit over Earth, with the black of space.
GRACE-FO Launch Press Kit
GRACE Follow-On (GRACE-FO) continues the legacy of GRACE, tracking Earth’s water movement and surface mass changes across the planet. Monitoring changes in ice sheets and glaciers, near-surface and...
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GRACE Follow-On (GRACE-FO) continues the legacy of GRACE, tracking Earth’s water movement and surface mass changes across the planet. Monitoring changes in ice sheets and glaciers, near-surface and underground water storage, the amount of water in large lakes and rivers, as well as changes in sea level and ocean currents provides an integrated global view of how Earth’s water cycle and energy balance are evolving.
GRACE-FO Mission Brochure
Between 2002 and 2016, Antarctica shed approximately 125 gigatons of ice per year, causing global sea level to rise by 0.35 millimeters per year.
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Between 2002 and 2016, Antarctica shed approximately 125 gigatons of ice per year, causing global sea level to rise by 0.35 millimeters per year.
Antarctic Ice Loss 2002-2016
GRACE-FO in a protective shipping container arriving at a new facility at Vandenberg Air Force Base, California.  
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GRACE-FO in a protective shipping container arriving at a new facility at Vandenberg Air Force Base, California.
GRACE-FO Arrives at Vandenberg
The GRACE-FO satellites were assembled by Airbus Defence and Space in Germany. The photo shows one of the satellites in the testing facility of IABG, an Airbus subcontractor, in Munich (view 2). 
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The GRACE-FO satellites were assembled by Airbus Defence and Space in Germany. The photo shows one of the satellites in the testing facility of IABG, an Airbus subcontractor, in Munich (view 2).
GRACE-FO Satellites During Testing (View 2)
For 15 years, the GRACE mission has unlocked mysteries of how water moves around our planet. It gave us the first view of underground aquifers from space, and shows how fast polar ice sheets and mo...
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For 15 years, the GRACE mission has unlocked mysteries of how water moves around our planet. It gave us the first view of underground aquifers from space, and shows how fast polar ice sheets and mountain glaciers are melting.
15 Years of GRACE Earth Observations
Gravity anomaly map using GRACE data.
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Gravity anomaly map using GRACE data.
Gravity Anomaly Map Using GRACE Data
A simplified example of how the distance between the GRACE-FO satellites changes as they pass from the Caribbean Sea across Colombia and Peru.
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A simplified example of how the distance between the GRACE-FO satellites changes as they pass from the Caribbean Sea across Colombia and Peru (which have higher mass than the oceans) to the Pacific Ocean. Panel 1: When both spacecraft are over the ocean, the distance between them is relatively constant.
How GRACE-FO Measures Gravity
Illustration of GRACE-FO in orbit (view 2).
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Twin spacecraft of GRACE-FO in orbit over Earth.
GRACE-FO in Orbit (View 2)
The GRACE-FO satellites are nearly identical. The Microwave Interferometer (MWI) will measure the minute variations in distance between the spacecraft.
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The GRACE-FO satellites are nearly identical. The Microwave Interferometer (MWI) will measure the minute variations in distance between the spacecraft.
GRACE-FO Instruments
GRACE-FO mission logo 
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GRACE FO logo
GRACE-FO Logo
This image shows the mean annual amplitude of total water storage on Earth in 2007 as measured by GRACE.
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This image shows the mean annual amplitude of total water storage on Earth in 2007 as measured by GRACE.
Total Water Storage from GRACE, 2007
3-2-1 liftoff of Falcon 9 with GRACE-FO! The Gravity Recovery and Climate Experiment Follow-on, or GRACE-FO, a collaboration between NASA and German Research Centre for Geosciences (GFZ) launched f...
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GRACE-FO launches aboard a Falcon 9.
GRACE-FO Launches Aboard a SpaceX Falcon 9
Illustration of GRACE-FO above Antarctica.
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Illustration of GRACE-FO above Antarctica.
GRACE-FO Above Antarctica
Illustration of GRACE-FO separating from Falcon 9 rocket after launch.
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Illustration of GRACE-FO separating from Falcon 9 rocket after launch.
GRACE-FO Separating from Rocket After Launch
The NASA/German Research Centre for Geosciences GRACE Follow-On spacecraft launches from Space Launch Complex 4E at Vandenberg Air Force Base in California.
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The rocket carrying GRACE-FO blasts off from the launch pad.
GRACE-FO Launches, Wide Shot
A long exposure of the  GRACE-FO launch from Vandenberg
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The rocket's blaze is seen across the sky in this long exposure view with the ocean in the foreground.
GRACE-FO Launch, Long Exposure

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