| 11. | They showed in 1992 that the pulsar was orbited by two planets.
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| 12. | Zeta 2 Reticuli is orbited by a circumstellar debris disk.
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| 13. | It is known to be orbited by two giant planets.
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| 14. | Like planets, electrons orbited a central, sun-like nucleus.
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| 15. | His observations demonstrated that the planet orbited around the Sun.
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| 16. | Each ion consists of a proton orbited by two electrons.
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| 17. | The combined line would have orbited London in Zone 4.
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| 18. | Wheelock orbited the Earth 238 times during the 15-day mission.
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| 19. | After a series of delays, OFO was orbited 9 November 1970.
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| 20. | Galaxy 26 was officially de-orbited on June 7, 2014.
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