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The corona can reach temperatures of up to ____.
Q1: Why did Copernicus hesitate to consider alternatives
Q14: Aristotle believed that objects falling to the
Q16: Which is an asterism of Pegasus?<br>A) Great
Q20: Coronal gas radiates energy at _ wavelengths.
Q20: Why are massive stars more luminous than
Q41: Stellar spectra started with the amount of
Q54: What property of a Cepheid variable can
Q55: Historical records show that there were very
Q56: Matter falling onto a compact object, such
Q63: A massive star can fuse more and