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The Hubble Space Telescope is a large space telescope orbiting Earth.
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What Did Hubble See on Your Birthday?
What Did Hubble See on Your Birthday?
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A light-year is the distance light travels in one Earth year. Learn about how we use light-years to measure the distance of objects in space.
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Why do we call it that?
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How many are there?
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Name that nebula!
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Gallery of NASA Universe Images
Galaxies, nebulae, and supernova remnants to view or print.
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Most galaxies formed more than 10 billion years ago! Learn about how we find the age of galaxies using light.
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Learn more about what these groups of stars can (and can’t) tell us about our place in the universe.
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and dark energy, too!
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Airplanes and satellites can experience changes in time! Read on to find out more.
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The biggest planet in our solar system
hubble
