| 单词 | local group |
| 释义 | Local Groupnoun Astronomy.the group of galaxies, at least 25 of which are known, that includes the Milky Way. Origin of Local GroupFirst recorded in 1915–20 Words nearby Local Grouplocal death, locale, local examinations, local flap, local government, Local Group, local immunity, localism, localite, locality, localization Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for Local GroupLocal Group nounastronomy the cluster of galaxies to which our galaxy and the Andromeda Galaxy belong Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for Local GroupLocal Group A group of more than 30 galaxies that includes 2 large spiral galaxies-the Milky Way and Andromeda-as well as numerous smaller galaxies, many of which are dwarfs. The Local Group has a diameter of approximately 10 million light-years, with its gravitational center located between our galaxy and the Andromeda galaxy. It is part of a larger grouping known as the Virgo supercluster. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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