What Do We Mean by the Star-Gas-Star Cycle

question 65

Multiple Choice

What do we mean by the star-gas-star cycle?

• A) It is the continuous recycling of gas in the galactic disk between stars and the interstellar medium.
• B) It is the idea that stars in close binary systems can exchange gas with one another.
• C) It is the set of nuclear reactions by which heavy elements are produced in the cores of massive stars.
• D) It describes the orbits of the stars and interstellar medium around the center of the galaxy.

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