
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 …
Gravity/Gravitational Field - NASA Earthdata
Nov 21, 2025 · Gravity is the field around physical bodies, such as planets, that draws objects toward its center. Earth's gravitational field can be measured by orbiting satellites that can …
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.
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. …
Glacier Power: How do Glaciers Move? - NASA Earthdata
Nov 21, 2025 · 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, …
ASDC Direct Data Download | NASA Earthdata
Nov 21, 2024 · NASA ASDC's Direct Data Download tool provides the ability to access and download all publicly available data collections via https.
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 …
StarChild: Galaxies - NASA
A galaxy is a cluster of stars, dust, and gas which is held together by gravity. Galaxies are scattered throughout the universe and they vary greatly in size. A galaxy may be alone or it …
StarChild: Glossary - NASA
GRAVITY The invisible force between objects that makes objects attract each other. GRAVITATIONAL PULL The attraction that one object has for another object due to the …
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 …