When we look at the sky, we have a flat, two-dimensional view. So how do astronomers figure the distances of stars and galaxies from Earth? (5:29 min.)

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Scientists have found thousands of planets that orbit other stars, just like Earth orbits the Sun. Some of them might even be able to support life.

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CurioCity resources which align with Quebec's Secondary III Science and Technology content area: The Earth and Space

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CurioCity resources which align with the Alberta Curriculum Grade 9 Science Unit of Study on Space Exploration.

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CurioCity resources which align with the Northwest Territories Grade 9 Science Unit of Study on Space Exploration.

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CurioCity resources which align with the Nunavut Grade 9 Science Unit of Study on Space Exploration.

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The use of kilometers is no longer a sensible unit for measuring distances in space due to its vastness. To overcome this, astronomers came up with the light-year.

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