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 |
|---|---|
| Beta Lyrae Star β Lyr Star |
A member of a class of variable, binary stars of which Beta Lyrae is the prototype. Both members of the system are massive, but one has expanded to fill its Roche lobe. This causes material to flow towards the other star, which becomes surrounded by an obscuring accretion disc.
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