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What parts of the galaxy are considered to make up the "spherical component"?
Q26: How did dark matter behave differently from
Q28: Because of the period-luminosity relation for Cepheids
Q31: How do astronomers determine the distance to
Q39: According to the solar nebula theory, Earth
Q45: Which star has the largest diameter?<br>A) white
Q47: If luminosity depends on radius and temperature,
Q54: The region controlled by Earth's magnetic field
Q55: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TBX9332/.jpg" alt=" Figure 17-12 (for
Q56: What theoryexplains the movement of the continents
Q60: _ variable stars are useful in measuring