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A parsec is a unit of time.
Q2: The American and African/European continents are now
Q3: Which of the giant planets was predicted
Q4: Examine the image below. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5243/.jpg" alt="Examine
Q5: How do astronomers explain the basic difference
Q22: To measure the parallax of the most
Q26: The planet Mercury still shows evidence of
Q45: Venus's surface temperature is fairly uniform from
Q50: The star named Capella has an apparent
Q61: Excluding the Sun,not a single star has
Q68: Today only 30 percent of galaxies contain