Multiple Choice
The variation in the strength of the calcium H and K emission from sun-like stars implies that these stars
A) probably have very extended coronae.
B) probably have a magnetic cycle similar to the sun's.
C) do not rotate differentially.
D) may have planets that orbit them.
E) probably have supergranules and spicules.
Correct Answer:
Verified
Correct Answer:
Verified
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