单词	spiral galaxy
释义	spiral galaxy noun : a galaxy exhibiting a central nucleus or barred structure from which extend curved arms of higher luminosity called also spiral nebula Example Sentences Recent Examples on the Web Size-wise, the Milky Way, a typical spiral galaxy, sits in the middle. Thomas Lewton, Quanta Magazine, 23 Aug. 2022 The image reveals that the Cartwheel Galaxy has a bright inner ring and a surrounding colorful ring, the result of a high-speed collision between a large spiral galaxy and a smaller galaxy, NASA said. Gina Martinez, CBS News, 2 Aug. 2022 Our Milky Way is on a collision course with another spiral galaxy called Andromeda. Marina Koren, The Atlantic, 17 Aug. 2022 Scientists believe that long ago, the Cartwheel was a common spiral galaxy, similar to our Milky Way. Tereza Pultarova, Scientific American, 4 Aug. 2022 Its wagon-wheel-esque appearance is the aftermath of a collision between a large spiral galaxy and a smaller galaxy that is not pictured. Julia Musto, Fox News, 2 Aug. 2022 Instead, this rare ring galaxy was formed when a large spiral galaxy and a smaller galaxy collided. Joshua Hawkins, BGR, 2 Aug. 2022 Yet could there be enough normal unseen matter —- in the form of neutron stars, white dwarfs or even very faint red dwarf stars, for instance; that could explain spiral galaxy formation without exotic dark matter? Bruce Dorminey, Forbes, 15 June 2022 Don’t miss out on these: – The Hubble Space Telescope looked straight into the heart of a grand design spiral galaxy and shared a stunning head-on view. Ashley Strickland, CNN, 4 June 2022 See More Word History First Known Use 1913, in the meaning defined above
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