Circumstellar disc

torus, pancake or ring-shaped accumulation of matter in orbit around a star

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]
change

References

change
  1. "ALMA Reveals Planetary Construction Sites". Retrieved 21 December 2015.