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Q29: How are planets and stars different?<br>A)Planets are
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Q39: Explain why the presence of spectral lines
Q58: The full Moon has an angular diameter
Q60: What is the term for the process
Q91: List the advantages the Hubble Space Telescope
Q96: On the H-R diagram,indicate the location of
Q142: Although neutron stars are very hot,they are
Q152: Do the constellations visible in the sky