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Geodesy and Geophysics Laboratory (61A) Press Releases & Feature Stories Archive

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Sea surface height measurements from the Sentinel-6 Michael Freilich (S6MF) satellite. The data show the ocean off the southern tip of Africa, with red colors indicating higher sea level relative to blue areas, which are lower.

NASA, US, European Partner Satellite Returns First Sea Level Measurements

12.30.2020
The Sentinel-6/Michael Freilich satellite reached its mapping orbit, and the radar altimeter returned its first measurements of sea surface height.
Schematic of ICESat-2 in orbit firing its green (532 nanometer) lasers to measure surface height.

Beyond Ice: NASA’s ICESat-2 Shows Hidden Talents

12.30.2020
The ICESat-2 laser altimeter data provide height measurements of every 2.3 feet (70 centimeters) along the ground path. The data provide precise measurements of the ice sheet height, ice floes, forest canopies, rivers and lakes and surface topography, and shallow water bathymetry.
Illustration of ISS in orbit

NASA Discoveries, R&D, Moon to Mars Exploration Plans Persevere in 2020

12.21.2020
???NASA has impressed the nation with our resilience and persistence during the pandemic,??? said NASA Administrator Jim Bridenstine.
At this year’s virtual American Geophysical Union meeting, NASA scientists will provide updates on a wide range of Earth and space science topics, including an update on Jupiter’s cyclones from the Juno mission

NASA Highlights New Findings, Upcoming Missions at Virtual AGU Meeting

12.21.2020
ASA and researchers from around the world will present new findings on a wide range of Earth and space science topics at the annual meeting of the American Geophysical Union (AGU), Dec. 1-17, held virtually this year.
AGU Fall Meeting Logo

NCCS, CISTO, and Partners Present Advances at Virtual AGU Fall Meeting

12.01.2020
Researchers from the NASA Center for Climate Simulation (NCCS), its parent Computational Information & Sciences and Technology Office (CISTO), NASA Goddard Space Flight Center, and university partner organizations are participating in the Scientific Program at the 2020 American Geophysical Union (AGU) Fall Meeting, being held online 1–17 Dec 2020.
Depiction of the Sentinel-6 spacecraft in orbit.

Sea Level Watcher Takes Flight

11.27.2020
A joint U.S.-European satellite, built to monitor global sea levels, lifted off on a SpaceX Falcon 9 rocket from Vandenberg Air Force Base just after 9 a.m. Pacific Time on November 21, 2020.
Magnetic Field Intensity on the Earth's surface in 2010 (nTesla)

Predicted Expansion of the South Atlantic Anomaly in the Next Five Years

11.20.2020
One of our recent geomagnetic predictions is the continuous westward expansion of the South Atlantic Anomaly (SAA), an area at the Earth’s surface where the geomagnetic field intensity is exceptionally low and stretches from southern Africa, across the southern Atlantic and South America, to the eastern Pacific.
NCCS and Partners Highlight Recent Scientific Advancements at Virtual SC20 Conference

NCCS and Partners Highlight Recent Scientific Advancements at Virtual SC20 Conference

11.16.2020
The NASA Center for Climate Simulation (NCCS) and NASA Goddard Space Flight Center partners will highlight their recent advances during SC20, the International Conference for High Performance Computing, Networking, Storage, and Analysis being held virtually November 9–19, 2020.
NASA logo

NASA Research Exhibit to Highlight Science and Engineering Advances at the Virtual SC20 Supercomputing Conference

11.16.2020
From assessing COVID-19’s global impacts to helping NASA return humans to the Moon to searching the cosmos for new exoplanets, researchers from across NASA, with university and industry partners, will highlight their latest advances, enabled by the agency’s supercomputers, at SC20—the International Conference for High Performance Computing.
Global map of Sea Level Rate

Taking a Measure of Sea Level Rise: Ocean Altimetry

11.06.2020
The ocean is lumpy and sloshes around its basins for natural reasons. But it is also rising, slowly and steadily.
Sentinel-6 spacecraft

The Precision Behind Sea Level Rise

11.06.2020
Knowing the precise location of a satellite in space is critical for determining sea surface height and, through this, the rate of global mean sea level rise.
Photo of flooded City Dock in Annapolis, MD

Beating Back the Tides

11.05.2020
Annapolis, Maryland; Norfolk, Virginia; and Miami were originally built and mapped to provide enough protection against flooding, but sea level rise has caused that buffer to shrink.
Global map of August Surface Mass Anomalies

Taking a Measure of Sea Level Rise: Gravimetry

11.05.2020
Scientists measure ice’s gravitational pull on a pair of satellites, allowing them to estimate ice loss and its contribution to sea level rise.
Graphic depiction of Van Allen Belts around Earth

NASA Researchers Track Slowly Splitting 'Dent' in Earth’s Magnetic Field

08.17.2020
A small but evolving dent in Earth’s magnetic field can cause big headaches for satellites.
Image of Lunar Reconnaissance Orbiter Spacecraft in orbit about the Moon with orb of Earth visible in the distance

Laser Beams Reflected Between Earth and Moon Boost Science

08.10.2020
After launching laser beams for years to NASA's Moon orbiter, scientists receive signal back for the first time
Paper in "Earth, Planets & Space" by Mazarico et al. (2020) on the successful laser ranging to LRO.
Photo of sea ice

Syncing NASA Laser, ESA Radar for a New Look at Sea Ice

07.16.2020
With a small nudge to a satellite’s orbit, scientists will soon have simultaneous laser and radar measurements of ice, providing new insights into Earth’s frozen regions.
The Sentinel 6/Freilich satellite undergoing testing prior to launch later in 2020.

New International Ocean Satellite Completes Testing

06.15.2020
The Sentinel 6/Freilich ocean radar altimeter satellite is undergoing system and environment testing at a test facility near Munich, Germany in preparation for launch later this year. Once in orbit, each satellite will collect sea level measurements down to the centimeter for 90% of the world's oceans from the TOPEX reference orbit.
Artist rendering of Gravity Recovery and Interior Laboratory (GRAIL) mission in orbit above the Moon

NCCS-Enabled Gravity Models Reveal Density of Moon’s Crust

04.17.2020
NASA Goddard and university scientists built high-resolution models of the Moon’s gravity field using NCCS supercomputers and data from GRAIL and LRO, revealing detailed structure of the lunar crust.
Paper by Goossens et al. (2020) in J. Geophys. Res.-Planets that presents these results.
2020 NASA Earth Day 50th Anniversary poster.

#EarthDayAtHome with NASA

04.16.2020
Fifty years ago, on April 22, 1970, people around the world marked the first Earth Day. Thousands gathered to raise awareness about the importance of protecting our beautiful planet for future generations.
Earth Day at Home graphic

NASA Marks Earth Day’s 50th Anniversary with #EarthDayAtHome

04.10.2020
As the world observes the 50th anniversary of Earth Day on Wednesday, April 22, NASA is highlighting the agency’s many contributions to sustaining and improving our home planet’s environment...
Logo grapic for NASA's Curious Universe

New NASA Podcast Helps Listeners Explore Our ‘Curious Universe’

04.06.2020
NASA’s newest podcast is taking listeners on an adventure to explore the wonders of Earth and help unravel the mysteries of the universe.
An aerial view of the icebergs near Kulusuk Island, off the southeastern coastline of Greenland, a region that is exhibiting an accelerated rate of ice loss.

Greenland, Antarctica Melting Six Times Faster Than in the 1990s

04.03.2020
An international scientific team has shown that Greenland and Antarctica are losing ice six times faster than they were in the 1990s.
Link to March 2020 Nature Article by IMBIE Team (Shepherd et al., 2020).
Keep the lights on banner image

NASA Science Keeps the Lights On

04.02.2020
Across NASA’s many missions, thousands of scientists, engineers, and other experts and professionals all over the country are doing what they do best, but now from home offices and via video conferencing. With most personnel supporting missions remotely to keep onsite staff at a minimal level in response to COVID-19, the Agency is moving ahead strongly with everything from space exploration to using our technology and innovation to help inform policy makers.
Image of Robert Goddard at chalkboard with mathematical formulas

Statement on NASA Goddard’s Coronavirus Prep Actions

03.13.2020
Goddard has canceled all non-mission-essential visits to its facilities. Goddard also is closing its Visitor Centers at Greenbelt and at Wallops Flight Facility, Virginia.
Schematic of the orbit used by OSIRIS-REx to fly over the Nightingale site.

OSIRIS-REx Swoops Over Sample Site Nightingale

03.10.2020
On March 3, 2020, the OSIRIS-REx spacecraft flew over the sample site Nightingale, taking observations from an altitude of 820 feet (250 m).
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  • Last Updated: 01/26/2021