Stars that are light-years away: How do we know and measure this?  |  Sciences

Stars that are light-years away: How do we know and measure this? | Sciences

When NU.nl writes about discoveries in space, you often read the number of light-years something has occurred or been located. Readers on the Njig website wondered how to calculate these distances. It's a complicated issue, but we'll give you a little introduction.

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