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Posted on Feb 12, 2024

1. You were told that a Centauri is 4.3 light years away. How long does it take light to reach Earth from a Centauri?

2. Scaling the Earth to the size of a pea, how far away would Pluto be?

3. How far away are the most distant galaxies yet observed and how long has the light taken to reach the Earth from them?

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