Space exploration began with the launch of Sputnik and Astrophysics was born as the application of physics to the phenomena observed by Astronomy, which etymologically means laws of the stars.
There are 2759 entries in this glossary.| Term | Definition |
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| Radial-Velocity Curve |
A graph in which the radial velocity of an object is plotted as a function of time. Such curves are used particularly in the analysis of binary star orbits, where the radial velocities of the components change with a regular periodic cycle.
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