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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 …

  2. 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.

  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 …

  4. 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 …

  5. 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 …

  6. 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 …

  7. StarChild: Glossary - NASA

    GRAVITATIONAL PULL See Gravity GRAVITY The force of attraction between two objects which is influenced by the mass of the two objects and the distance between the two objects. …

  8. Gravity Recovery and Climate Experiment | NASA Earthdata

    The NASA/German Space Agency (DLR) Gravity Recovery and Climate Experiment/GRACE Follow-on (GRACE and GRACE-FO) platform consists of two identical satellites that act in …

  9. Teachers' Center Activity: Gravity Effects on Planet Motion - NASA

    1. Introduction: Review the definition of gravity Drop a ball and explain why it falls downward Explain that the strength of a gravitational pull is determined by the masses of the objects …

  10. Round and Round They Go - NASA

    Newton's model of gravity is one of the most important scientific models in history. It applies not only to apples and Moons near Earth, but to stars and distant galaxies as well. The only time …