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Q22: On the H-R diagram, the Sun lies<br>A)
Q40: An interstellar gas cloud has the mass
Q42: We know the Sun rotates differentially by
Q49: Pluto is visible to the naked eye
Q55: What factor caused different planets to form
Q58: The leading explanation for the existence of
Q60: It takes about 10³² hydrogen atoms to
Q62: You observe a spiral galaxy with a
Q79: Briefly describe how Hubble classified the galaxies
Q86: What is the source of Jupiter's intense