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Author : Seymour Simon

Date : 1991-09-18

Page : 36

Rating : 3.0

Reviews : 3

Category : Book

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Galaxy Wikipedia ~ A galaxy is a gravitationally bound system of stars stellar remnants interstellar gas dust and dark matter The word galaxy is derived from the Greek galaxias γαλαξίας literally milky a reference to the Milky s range in size from dwarfs with just a few hundred million 10 8 stars to giants with one hundred trillion 10 14 stars each orbiting its galaxys center

Galaxies—facts and information Science ~ Galaxies are sprawling systems of dust gas dark matter and anywhere from a million to a trillion stars that are held together by gravity Nearly all large galaxies are thought to also contain

Galaxies Science Mission Directorate ~ Our galaxy the Milky Way is typical it has hundreds of billions of stars enough gas and dust to make billions more stars and about six times as much dark matter as all the stars and gas put together And it’s all held together by gravity Like more than twothirds of the known galaxies the Milky Way has a spiral shape At the center of the spiral a lot of energy and occasionally

List of galaxies Wikipedia ~ The following is a list of notable galaxies There are about 51 galaxies in the Local Group see list of nearest galaxies for a complete list on the order of 100000 in our Local Supercluster and an estimated one to two trillion in all of the observable universe The discovery of the nature of galaxies as distinct from other nebulae interstellar clouds was made in the 1920s

galaxy Formation Types Properties Facts Britannica ~ Galaxy any of the systems of stars and interstellar matter that make up the universe Many such assemblages are so enormous that they contain hundreds of billions of stars Virtually all galaxies appear to have been formed soon after the universe began and they pervade all space that is viewable by modern telescopes

Galaxies Collisions Types and How Theyre Made Space ~ Galaxies are composed of stars dust and dark matter all held together by gravity They come in a variety of shapes sizes and ages

Galaxies NASA ~ A galaxy is a large group of stars gas and dust bound together by solar system resides in the Milky Way galaxy a spiral galaxy that is part of a group of galaxies called the Local Group

What Is a Galaxy NASA Space Place – NASA Science for Kids ~ A galaxy is a huge collection of gas dust and billions of stars and their solar systems all held together by gravity

Galaxies NASA ~ Galaxies NASA

How Many Galaxies Are There Space ~ Astronomers say there are 100 billion to 200 billion galaxies in the universe But accurately counting the number of galaxies depends on several factors