exoplanet

noun

exo·​plan·​et ˈek-sō-ˌpla-nət How to pronounce exoplanet (audio)
ˌek-sō-ˈpla-
: a planet orbiting a star that is not our sun

Examples of exoplanet in a Sentence

Recent Examples on the Web As a result, the exoplanet is an optimal candidate for future observations with the James Webb Space Telescope. Ashley Strickland, CNN, 8 Feb. 2024 News of mysterious exoplanets that potentially support life, speculation about UFOs and the launch of uncrewed missions to the far reaches of space defined 2023. Eric Lagatta, USA TODAY, 4 Jan. 2024 Pushing the boundaries of human knowledge and technology, the James Webb Space Telescope targets TRAPPIST-1 in an attempt to detect atmospheres around these rocky exoplanets. Tony Bradley, Forbes, 28 Mar. 2024 Share [Findings] The exoplanet NGTS-10b was found to have a year lasting eighteen Earth hours and to be at risk of falling into its star. Rafil Kroll-Zaidi, Harper's Magazine, 27 Mar. 2024 These could potentially collect images of Earth-sized exoplanets, and seismometers placed at cold traps could measure the moon’s own movement amidst gravitational waves. Christian Thorsberg, Smithsonian Magazine, 27 Mar. 2024 See all Abstractions blog A slew of recent papers explore the daunting uncertainties in exoplanet biosignature detection. Elise Cutts, Quanta Magazine, 19 Mar. 2024 Researchers have discovered over 5,600 exoplanets in the past 30 years, and their extraordinary diversity continues to surprise astronomers. Chris Impey, Discover Magazine, 12 Feb. 2024 If an exoplanet is too far away for even the most powerful telescopes to search directly for water or certain biosignatures, is there something else that may tell us about the possibility of habitability? Elizabeth Rayne, Ars Technica, 9 Jan. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'exoplanet.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1992, in the meaning defined above

Time Traveler
The first known use of exoplanet was in 1992

Dictionary Entries Near exoplanet

Cite this Entry

“Exoplanet.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/exoplanet. Accessed 25 Apr. 2024.

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