A galaxy is a gravitationally bound system of stars, gas, dust, dark matter, etc. Small galaxies hold as few as ten million stars; large galaxies hold about a hundred trillion stars.
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« Back to Glossary Index
A galaxy is a gravitationally bound system of stars, gas, dust, dark matter, etc. Small galaxies hold as few as ten million stars; large galaxies hold about a hundred trillion stars.
« Back to Glossary Index
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