Physics, 05.10.2019 06:30, anaikad

Suppose that aliens from a planet orbiting betelgeuse have eyes similar to human eyes, except that the diameter of their pupils is 0.5m rather than 0.007m for humans. how far from betelgeuse must they travel before it is just visible to them?

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Suppose that aliens from a planet orbiting betelgeuse have eyes similar to human eyes, except that t...