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American interest in " gravity control propulsion research " intensified during the early 1950s. Literature from that period used the terms anti-gravity, anti-gravitation, baricentric, counterbary, electrogravitics (eGrav), G-projects, gravitics, gravity control, and gravity propulsion. [1][2] Their publicized goals were to discover and develop ...
The Gravity Research Foundation is an organization established in 1948 by businessman Roger Babson (founder of Babson College) [1] to find ways to implement gravitational shielding. [2][3] Over time, the foundation turned away from trying to block gravity and began trying to understand it. It holds an annual contest rewarding essays by ...
GRACE and GRACE-FO. The Gravity Recovery and Climate Experiment (GRACE) was a joint mission of NASA and the German Aerospace Center (DLR). Twin satellites took detailed measurements of Earth's gravity field anomalies from its launch in March 2002 to the end of its science mission in October 2017. The two satellites were sometimes called Tom and ...
Gravity Probe B. Gravity Probe B (GP-B) was a satellite -based experiment to test two unverified predictions of general relativity: the geodetic effect and frame-dragging. This was to be accomplished by measuring, very precisely, tiny changes in the direction of spin of four gyroscopes contained in an Earth-orbiting satellite at 650 km (400 mi ...
Albert Einstein proposed [3][4] three tests of general relativity, subsequently called the "classical tests" of general relativity, in 1916: the perihelion precession of Mercury 's orbit. the deflection of light by the Sun. the gravitational redshift of light. In the letter to The Times (of London) on November 28, 1919, he described the theory ...
History of gravitational theory. In physics, theories of gravitation postulate mechanisms of interaction governing the movements of bodies with mass. There have been numerous theories of gravitation since ancient times. The first extant sources discussing such theories are found in ancient Greek philosophy.
General Relativity and Gravitation is a monthly peer-reviewed scientific journal. It was established in 1970, and is published by Springer Science+Business Media under the auspices of the International Society on General Relativity and Gravitation. The two editors-in-chief are Pablo Laguna and Mairi Sakellariadou; former editors include George ...
Pankaj S. Joshi (born 25 April 1953) is an Indian astrophysicist and cosmologist whose research is mainly focused on areas of gravitational collapse and spacetime singularity. [1] He has published more than 225 research papers in national and international journals, and books and monographs on the subject.