StarChild: Glossary

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.

2024 Jul 03

Sir Isaac Newton

As the years progressed, Newton completed his work on universal, diffraction of light, centrifugal force, centripetal force, inverse-square law, bodies in motion and the variations in tides due to

2024 Dec 06

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

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

2024 May 14

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 are useful

2024 Nov 07

Teachers'' Center Activity: Gravity Effects on Planet Motion

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

2025 Jul 11

The Case of the Missing Waves

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

2025 Aug 18

Glacier Power: How do Glaciers Move? | NASA Earthdata

A glacier is a large accumulation of many years of snow, transformed into ice. This solid crystalline material deforms (changes) and moves. Glaciers, also known as "rivers of ice,"

2025 Feb 06

What is gravity?

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

2025 Dec 30

Matter in Motion: Earth''s Changing Gravity

This map, created using data from the Gravity Recovery and Climate Experiment (GRACE) mission, reveals variations in the Earth''s gravity field. Dark blue areas show areas with lower

2024 Nov 24

StarChild: Stars

Gravity causes the last of the star''s matter to collapse inward and compact. This is the white dwarf stage which is extremely dense. White dwarfs shine with a white hot light but once all of their

2025 Aug 28

View/Download Gravity mechanical energy storage power generation [PDF]

PDF version includes complete article with source references. Suitable for printing and offline reading.