Globular Cluster by Ensign February 20, 2021 0 A tight, spherical grouping of hundreds of thousands of stars. Globular clusters are composed of older stars, and are usually ...
GPS by Ensign February 20, 2021 0 This stands for Global Positioning System. It's a system that uses satellites, ground stations, and receivers to tell you exactly ...
Granulation by Ensign February 20, 2021 0 A pattern of small cells that can be seen on the surface of the Sun. They are caused by the ...
Gravitation by Ensign February 20, 2021 0 The mutual attraction of all masses in the universe. Newton's Law of Universal Gravitation holds that every two bodies attract ...
Gravitational Lens by Ensign February 20, 2021 0 A concentration of matter such as a galaxy or cluster of galaxies that bends light rays from a background object. ...
Gravitational waves by Ensign February 20, 2021 0 Einsteinian distortions of the space-time medium predicted by general relativity theory (not yet directly detected as of March 2010). (Not ...
Gravity by Ensign February 20, 2021 0 A mutual physical force of nature that causes two bodies to attract each other.
Gravity assist by Ensign February 20, 2021 0 Technique whereby a spacecraft takes angular momentum from a planet's solar orbit (or a satellite's orbit) to accelerate the spacecraft, ...
