Eli5: How will NASA’s telescope be able to observe stuff happening from billions of years ago?

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I saw a post on reddit saying NASA has a telescope that is able to see the creation of planets and stars from 13 billion years ago. How can that work?

Link to post: https://www.reddit.com/r/interestingasfuck/comments/ke2p2r/nasa_is_about_to_launch_a_telescope_that_can/?utm_medium=android_app&utm_source=share

In: Physics

9 Answers

Anonymous 0 Comments

If you look at the sun, you are seeing it as it was 8 minutes ago, since it took the light from the sun 8 minutes to travel to earth.

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