Which of These Statements About Open Star Clusters Is TRUE

question 295

Multiple Choice

Which of these statements about open star clusters is TRUE?

• A) Open star clusters slowly condense into globular clusters as the stars drive off the remaining interstellar dust and gas.
• B) One star in an open cluster eventually undergoes a supernova explosion that quickly disperses the other stars.
• C) As open star clusters slowly condense, their residual rotation spins them into a flat pancake shape and they become spiral galaxies.
• D) The motions of individual stars are such that all open clusters eventually disperse.

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