outer planet

noun

Definition of outer planet 

: any of the planets Jupiter, Saturn, Uranus, and Neptune whose orbits lie beyond the asteroid belt

Examples of outer planet in a Sentence

Recent Examples on the Web

And, as one of the outer planets in our solar system, Uranus moves pretty slowly, completing one orbit of the sun every 84 years and moving into a new Zodiac sign about every seven. refinery29.com, "Uranus Is Moving Into Taurus — & That’s Actually Kind Of A Big Deal," 14 May 2018 The planets on the other side of the asteroid belt are referred to as the outer planets. Aliza Kelly Faragher, Allure, "Birth Charts 101: An Astrology Beginner's Guide to Understanding the Planets," 12 Mar. 2018 But fortunately, the outer planets might be safe from this barrage of high-energy space weather. John Wenz, Popular Mechanics, "Some TRAPPIST-1 Planets Could Support Atmospheres Despite Volatile Star," 30 Dec. 2017 The outer planets define larger life themes, as well as experiences shared by generations. Aliza Kelly Faragher, Allure, "Birth Charts 101: An Astrology Beginner's Guide to Understanding the Planets," 12 Mar. 2018 And other missions have entirely switched budget lines, Callahan says, such as the Voyager 1 and 2 probes, which were moved from a planetary budget into a heliophysics one after their encounters with the outer planets were concluded. John Wenz, Scientific American, "Newer Horizons: Scientists Pitch Pluto Probe as a Unique Deep-Space Telescope," 12 Mar. 2018 The new rocket may play some role in science missions to the outer planets, too. Eric Berger, Ars Technica, "This may be the moment SpaceX opened the cosmos to the masses," 7 Feb. 2018 According to a new study in the Proceedings of the National Academy of the Sciences, the outer planets of the system could cling on to their atmospheres. John Wenz, Popular Mechanics, "Some TRAPPIST-1 Planets Could Support Atmospheres Despite Volatile Star," 30 Dec. 2017 Many members of the Voyager expedition, which was nearing the end of its decade-long tour of the outer planets, joined the mission. Marina Koren, The Atlantic, "This Is the Way Cassini Ends," 14 Sep. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'outer planet.' 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 outer planet

1850, in the meaning defined above

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The first known use of outer planet was in 1850

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