Binary System
- Circumprimary disk, is where a disk orbits the primary (i.e. more massive) star of the binary star system.
- Circumsecondary disk is one around the secondary (i.e. less massive) star of the binary star system.
- Circumbinary disk, is where a disk orbits both the primary and the secondary of the binary system.
Read more about this topic: Circumstellar Disk
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“He is not a true man of science who does not bring some sympathy to his studies, and expect to learn something by behavior as well as by application. It is childish to rest in the discovery of mere coincidences, or of partial and extraneous laws. The study of geometry is a petty and idle exercise of the mind, if it is applied to no larger system than the starry one.”
—Henry David Thoreau (1817–1862)