Circumstellar disc

A circumstellar disc (or circumstellar disk) is a torus pancake or ring-shaped accumulation of matter that composed of gas, dust, planetesimals, asteroids or collision fragments in Orbit around a star.

Artist's impression of a transitional disc around a young star.[1]

References
Wikimedia Commons has media related to Circumstellar disks.
The Simple English Wiktionary has a definition for: accumulation, collision, and fragment.
  1. "ALMA Reveals Planetary Construction Sites". Retrieved 21 December 2015.


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