Eli5: How far can a burst of light from a laser go into space

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If we shoot a burst of light from our most powerful laser into space…how far could it travel before fading, it it doesn’t hit anything? And would it travel straight?

In: Physics

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Anonymous 0 Comments

One thing I’ve never had a goode explanation for is how do we see anything? I’m looking at my cat. Is he emitting photons or something?

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