A circumstellar disc (or circumstellar disk) is a torus-, pancake- or ring-shaped accretion disk of matter composed of gas, dust, planetesimals, asteroids, or collision fragments in orbit around a star. Around the youngest stars, they are the reservoirs of material out of which planets may form.
A circumstellar disc (or circumstellar disk) is a torus-, pancake- or ring-shaped accretion disk of matter composed of gas, dust, planetesimals, asteroids, or collision fragments in orbit around a star. Around the youngest stars, they are the reservoirs of material out of which planets may form.
Source: Wikipedia "Circumstellar disc" · CC BY-SA 4.0
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