exo·​plan·​et | \ ˈek-sō-ˌpla-nət How to pronounce exoplanet (audio) , ˌek-sō-ˈpla-\

Definition of exoplanet

: a planet orbiting a star that is not our sun

Examples of exoplanet in a Sentence

Recent Examples on the Web

But something happened to this exoplanet. to change its orbit. Cnn.com Wire Service, The Mercury News, "‘Wrecking ball’ of a planet almost avoids discovery because of strange orbit," 28 Aug. 2019 Astronomers just found a giant exoplanet three times more massive than Jupiter that loops around its host star on a highly elliptical path. Mike Wall, Scientific American, "Newfound Alien Planet Has a Bizarre Looping Orbit," 28 Aug. 2019 Finding planets orbiting distant stars, or exoplanets, is difficult. Natalie Hinkel, The Conversation, "Accelerating exoplanet discovery using chemical fingerprints of stars," 25 June 2019 Along with new stars, the spacecraft has been used to map asteroids in our solar system and will, in subsequent data releases, likely find more than a few exoplanets. John Wenz, Popular Mechanics, "How a Star Mapping Satellite Could Find Alien Life," 26 Apr. 2018 They were first discovered in June as part of the CARMENES search for exoplanets, according to a press release. Fox News, "'Earth-like exoplanets' 12.5 light-years away could have liquid water and be home to life, study suggests," 8 Aug. 2019 With the Kepler mission over, NASA’s exoplanet efforts have now shifted to a new telescope, the Transiting Exoplanet Survey Satellite (TESS), which was launched in 2018. Jonathan O'callaghan, Scientific American, "One Search to (Almost) Rule Them All: Hundreds of Hidden Planets Found in Kepler Data," 2 Aug. 2019 Launched in 2018, TESS is NASA's latest satellite to help feed the recent exoplanet boom. David Grossman, Popular Mechanics, "NASA Exoplanet Hunter Finds 'Hot Earth'," 2 Aug. 2019 An artist's concept image of the surface of the exoplanet TRAPPIST-1f. Ashley Strickland, CNN, "TESS finds potentially habitable super-Earth 31 light-years away," 1 Aug. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'exoplanet.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of exoplanet

1992, in the meaning defined above

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Statistics for exoplanet

Last Updated

17 Sep 2019

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Time Traveler for exoplanet

The first known use of exoplanet was in 1992

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More from Merriam-Webster on exoplanet

Britannica English: Translation of exoplanet for Arabic Speakers

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formidable, illustrious, or eminent

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