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