StarChild: Did you know... (The Sun)

The Sun''s gravitational pull is so strong that a 100 pound person would weigh 28 times that, or 2800 pounds, on the Sun.

StarChild: Galaxies

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 may be in a large

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 than normal

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. GYROSCOPE

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 energy is

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.

Glacier Power: How do Glaciers Move? | NASA Earthdata

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 known as “rivers of ice,”

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 involved and the

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 tools for

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 equation says