planetary science

noun

planetary scientist noun

Examples of planetary science in a Sentence

Recent Examples on the Web
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Astrophysics and planetary science each face 10 cancellations, according to the analysis. Meghan Bartels, Scientific American, 9 Apr. 2026 Advocates warn the reductions could disrupt or cancel dozens of missions spanning planetary science, astrophysics and Earth observation — areas overseen by NASA's Science Mission Directorate. Samantha Mathewson, Space.com, 6 Apr. 2026 In the coming days, scientists will further analyze the samples' mineral chemistry, oxygen isotopes and surface features and use that data to submit an official meteorite classification to the Meteoritical Society, an international organization that promotes planetary science, Fries said. Maliya Ellis, Houston Chronicle, 5 Apr. 2026 The study bridges an important gap between telescopic observations and laboratory analysis, said Damanveer Grewal, an assistant professor in the department of Earth and planetary sciences at Yale University, who also did not take part in the study. Jacopo Prisco, CNN Money, 6 Feb. 2026 See All Example Sentences for planetary science

Word History

First Known Use

1969, in the meaning defined above

Time Traveler
The first known use of planetary science was in 1969

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Cite this Entry

“Planetary science.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/planetary%20science. Accessed 15 Apr. 2026.

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