- 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 distance between the objects Hold up a scale model of Earth and a scale model of the Sun. Inquire as to which object would exert a stronger pull
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 gravity, such as the Indian Ocean (far right of image) and the Congo river basin in Africa. Dark red areas indicate areas with higher than normal gravity.
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 be dragged along a curved path. In the foreground, the Laser Geodynamics Satellites (LAGEOS) spin in an orbit high above Earth. In the background, the Gravity Recovery and Climate Experiment (GRACE ...
The NASA/German Space Agency (DLR) Gravity Recovery and Climate Experiment/GRACE Follow-on (GRACE and GRACE-FO) platforms each consist of two identical satellites that act in unison as the primary instrument. The two satellites comprising each mission orbit one behind the other in the same orbital plane at an approximate distance between the two satellites of 220 km (137 miles).
Gravity is a force of attraction that exists between any two masses, any two bodies, any two particles. Gravity is not just the attraction between objects and the Earth.