Circumstellar disc
![](http://upload.wikimedia.org/wikipedia/commons/thumb/9/93/Artist%27s_impression_of_a_transitional_disc_around_a_young_star.jpg/220px-Artist%27s_impression_of_a_transitional_disc_around_a_young_star.jpg)
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.
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References
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- ↑ "ALMA Reveals Planetary Construction Sites". Retrieved 21 December 2015.