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What is the difference between an open cluster,an association,and a globular cluster? In which parts of the galaxy is each found?
Q11: Which of the following applies if the
Q22: What is the significance of the colours
Q49: Which of the following objects may have
Q59: The deuterium in distant quasars and in
Q64: What is the most common redshift of
Q69: Even in degenerate matter,pressure depends on temperature.
Q76: Planetary nebulae are sites of planet formation.
Q94: Why are spectroscopic binaries difficult to analyze?<br>A)We
Q102: How do astronomers know that there is
Q104: Which of the following best describes poor