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 …

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

3 days ago · 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 which …

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 …

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 …

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 …

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 …

Jan 2, 2026 · Geodesy is the science of the Earth’s shape, gravity, and rotation, including their evolution in time. Learn more about geodetic data and how they enable scientists to track crustal motion.

Dec 28, 2020 · The twin GRACE satellites orbit in tandem, measuring micrometers of change in the distance between them, caused by small deviations in gravity. Changes in the location of water or ice …

Gravity then pulled in more matter from areas of lower density and the clumps grew. After about 200 million years of this clumping, there was enough matter in one place that the temperature got high …