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| Description: (a) The star Upsilon Andromedae has at least three planets, discovered by measuring the complex Doppler shift of the star. This star system is located 44 ly from Earth, and the planets all have masses similar to Jupiter’s. (b) The orbital paths of the planets, labeled B, C, and D, along with the orbits of Venus, Earth, and Mars, are drawn for comparison. Picture Stats: Views: 658 Filesize: 190.82kB Height: 900 Width: 1062 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=15956 |