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Explore the different types of galaxies!
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How many are there?
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What are they and what will become of them?
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Let the beauty of the galaxies shine in your room.
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Make a colorful work of galactic art.
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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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Why do we call it that?
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and dark energy, too!
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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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The Hubble Space Telescope is a large space telescope orbiting Earth.
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Printable posters, lithographs, postcards, and bookmarks.
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Airplanes and satellites can experience changes in time! Read on to find out more.
galaxies
