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What observation made of other stars seems to suggest the solar nebula theory is correct
Q9: The terrestrial celestial object _ is most
Q12: From 20-25 days, the planet is <img
Q13: Jovian planets are found in the inner
Q29: We are among the products of nuclear
Q32: The atmosphere of Mars primarily consists of
Q40: Elliptical galaxies contain more gas, dust, and
Q48: _ galaxies contain large clouds of gas
Q55: If the density of the universe is
Q68: Isotropic is the same as homogeneous.
Q144: The hydrogen Balmer line Hβ has a