cosmic dust

noun

Definition of cosmic dust

: very fine particles of solid matter found in any part of the universe

Examples of cosmic dust in a Sentence

Recent Examples on the Web But this light is more ethereal; it is caused by sunlight reflecting off billions of cosmic dust grains between the planets formed about 4.6 billion years ago. Gerald Herbert, National Geographic, "What's it like to find a piece of a one-of-a-kind dinosaur?," 16 Sep. 2020 Among the scenarios the scientists investigated were volcanic outgassing, intense lightning strikes, tectonic plates rubbing together, bismuth rain, and cosmic dust. Nadia Drake, National Geographic, "Possible sign of life on Venus stirs up heated debate," 14 Sep. 2020 The annual celestial light show is caused by cosmic dust and debris left in Earth’s orbital path by Comet 109P/Swift-Tuttle. Courtney Sexton, Smithsonian Magazine, "Perseid Meteor Shower Reaches Peak Starting Tonight," 10 Aug. 2020 Somewhere in the cosmic dust of the internet, there’s a video of Fiona Apple dancing at home with her dog. Leah Greenblatt, EW.com, "Fiona Apple returns with the wild, wooly Fetch the Bolt Cutters," 17 Apr. 2020 But because our planet hits this cosmic dust trail at a perpendicular angle, our rendezvous with the Quadrantids will be brief. Katherine J. Wu, Smithsonian Magazine, "How to Catch the Quadrantids, the First Major Meteor Shower of the 2020s," 30 Dec. 2019 The meteors are the result of cosmic dust shed by Comet 8P/Tuttle, which, according to Space.com, orbits the sun once every 13.6 year and is not due to return until August 2020. Leada Gore | Lgore@al.com, al, "Ursid meteor shower peaks tonight: Times, where to see shootings stars," 22 Dec. 2019 Our solar system is currently passing through a large cloud of space dust known as the Local Interstellar Cloud (LIC), and grains from this cloud found on Earth could reveal much about how our sun and its planets interact with cosmic dust. Mindy Weisberger, Scientific American, "Space Dust from Ancient Supernova Found Hiding in Antarctica," 14 Aug. 2019 Our solar system is currently passing through a large cloud of space dust known as the Local Interstellar Cloud (LIC), and grains from this cloud found on Earth could reveal much about how our sun and its planets interact with cosmic dust. Mindy Weisberger, NBC News, "Space dust from ancient supernova found hiding in Antarctica," 14 Aug. 2019

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

1881, in the meaning defined above

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The first known use of cosmic dust was in 1881

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Statistics for cosmic dust

Last Updated

29 Oct 2020

Cite this Entry

“Cosmic dust.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cosmic%20dust. Accessed 1 Dec. 2020.

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