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  1. What is gravity? - NASA

    Newton's "law" of gravity is a mathematical description of the way bodies are observed to attract one another, based on many scientific experiments and observations. The gravitational equation says …

  2. Gravity/Gravitational Field - NASA Earthdata

    Dec 26, 2025 · Gravity/Gravitational Field Data from NASA satellite observations provide information about Earth's mean gravity field and inform monthly maps of the time-variable gravity field, both of …

  3. The Case of the Missing Waves - NASA Earthdata

    Dec 28, 2020 · Gravity waves are a real challenge because they are largely invisible to climate and weather models. The crux of the problem is the way satellites see them. Satellite instruments sweep …

  4. Matter in Motion: Earth's Changing Gravity | NASA Earthdata

    Dec 28, 2020 · A new satellite mission sheds light on Earth's gravity field and provides clues about changing sea levels.

  5. NASA Satellite Data Show Decrease in Colorado River Basin Aquifers ...

    Dec 5, 2025 · Two, measuring the Earth’s gravity field allows researchers to measure variations of Earth's gravity, which is the measurement used to assess the Colorado River Basin Aquifers. As the …

  6. Glacier Power: How do Glaciers Move? - NASA Earthdata

    Jan 2, 2026 · Glaciers Are Solid Rivers A glacier is a large accumulation of many years of snow, transformed into ice. This solid crystalline material deforms (changes) and moves. Glaciers, also …

  7. A Snag in Space-Time | NASA Earthdata

    Dec 27, 2020 · An artistic rendering shows that Earth’s rotation has dragged space-time with it. A particle dropping from infinity towards the center of the planet would not fall in a straight line; it would …

  8. Operation IceBridge - NASA Earthdata

    Operation IceBridge was an airborne campaign that surveyed the Arctic, Antarctica, and Alaska over a period of 10 years. IceBridge provided essential data on the height, depth, thickness, and flow of sea …

  9. GRACE GPS code and phase observations have been used undifferenced and by means of the ionosphere-free (L3) linear combination. Azimuth- and elevation-dependent phase center variations …

  10. The Precision Behind Sea Level Rise - NASA Earthdata

    Apr 19, 2021 · Gravity is not constant across Earth, and the amount of force exerted by gravity changes with changes in mass. These uneven mass distributions influence satellite trajectories since areas of …