Definitions for galaxies
gal·ax·ies

WiktionaryRate this definition:5.0 / 1 vote

1. galaxiesnoun

   Plural form of galaxy.

WikipediaRate this definition:0.0 / 0 votes

1. galaxies

   A galaxy is a system of stars, stellar remnants, interstellar gas, dust, dark matter, bound together by gravity. The word is derived from the Greek galaxias (γαλαξίας), literally 'milky', a reference to the Milky Way galaxy that contains the Solar System. Galaxies, averaging an estimated 100 million stars, range in size from dwarfs with less than a hundred million stars, to the largest galaxies known – supergiants with one hundred trillion stars, each orbiting its galaxy's center of mass. Most of the mass in a typical galaxy is in the form of dark matter, with only a few percent of that mass visible in the form of stars and nebulae. Supermassive black holes are a common feature at the centres of galaxies. Galaxies are categorized according to their visual morphology as elliptical, spiral, or irregular. Many are thought to have supermassive black holes at their centers. The Milky Way's central black hole, known as Sagittarius A*, has a mass four million times greater than the Sun. As of March 2016, GN-z11 is the oldest and most distant galaxy observed. It has a comoving distance of 32 billion light-years from Earth, and is seen as it existed just 400 million years after the Big Bang. In 2016, using 20 years of images from the Hubble space telescope, it was estimated that there were in total two trillion (2×1012) or more galaxies in the observable universe, and as many as an estimated 1×1024 stars (more stars than all the grains of sand on all beaches of the planet Earth).In 2021, data from NASA's New Horizons space probe was used to revise the earlier estimate to roughly 200 billion galaxies (2×1011),Most galaxies are 1,000 to 100,000 parsecs in diameter (approximately 3,000 to 300,000 light years) and are separated by distances on the order of millions of parsecs (or megaparsecs). For comparison, the Milky Way has a diameter of at least 26,800 parsecs (87,400 ly) and is separated from the Andromeda Galaxy (with diameter of about 152,000 ly), its nearest large neighbor, by 780,000 parsecs (2.5 million ly.) The space between galaxies is filled with a tenuous gas (the intergalactic medium) with an average density of less than one atom per cubic meter. Most galaxies are gravitationally organized into groups, clusters and superclusters. The Milky Way is part of the Local Group, which it dominates along with Andromeda Galaxy. The group is part of the Virgo Supercluster. At the largest scale, these associations are generally arranged into sheets and filaments surrounded by immense voids. Both the Local Group and the Virgo Supercluster are contained in a much larger cosmic structure named Laniakea.

Webster DictionaryRate this definition:0.0 / 0 votes

1. Galaxies

   of Galaxy

U.S. National Library of MedicineRate this definition:0.0 / 0 votes

1. Galaxies

   Large aggregates of CELESTIAL STARS; COSMIC DUST; and gas. (From McGraw Hill Dictionary of Scientific and Technical Terms, 6th ed)

How to pronounce galaxies?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say galaxies in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of galaxies in Chaldean Numerology is: 4

2. Pythagorean Numerology

   The numerical value of galaxies in Pythagorean Numerology is: 6

Examples of galaxies in a Sentence

1. Bryan Holler:

   Combined with the deep field images released the other day, these images of Jupiter demonstrate the full grasp of what James Webb can observe, from the faintest, most distant observable galaxies to planets in our own cosmic backyard that you can see with the naked eye from your actual backyard.

2. Tao Wang:

   This is the first time that such a large population of massive galaxies was confirmed during the first 2 billion years of the 13.7-billion-year life of the universe. These were previously invisible to us, this finding contravenes current models for that period of cosmic evolution and will help to add some details, which have been missing until now.

3. Ganga Sagar Pant:

   If you always look down and dark, you have possibility of going to depression; you can change yourself towards light and colorful lives by looking up. Look at the sky, stars, galaxies, the infinity of the Universe..., you will start shining and twinkling as you are truly one among those!

4. Kyle Johnson:

   Last night, my mother, Nichelle Nichols, succumbed to natural causes and passed away. Her light however, like the ancient galaxies now being seen for the first time, will remain for us and future generations to enjoy, learn from, and draw inspiration, hers was a life well lived and as such a model for us all.

5. George Rieke:

   However, logic dictates that at some point during the first few hundred million years, these familiar-looking objects must have come from somewhere and evolved, after all, galaxies don't spring up from nothing, virtually overnight.

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References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Galaxies
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Galaxies
3. ^ Webster Dictionary
   https://www.merriam-webster.com/dictionary/galaxies