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^^^ a little physics/geometry puzzle I made up as a teenager I suggest trying to answer yourself before checking the replies for spoilers.
The answer (near as I can reason): If we model the sun as stationary and the earth as doing all the movement, then to hit the sun, you just have to aim directly at it. The fact that the sun appears to move in the sky as light takes time to travel is a red herring.
I was thinking the only error should be from Earth's orbital velocity. Avg. appears to be 30 km/s, which the light would inherit, throwing it off by ~14,400 km by the time it gets to the Sun (only 1% of its diameter).
Thanks! This is something I’ve always wondered about, and am still confused by. Can you explain with a few more words?
Now wait a minute! What about the velocity of the surface of the earth at the equator (465m/s)? I'd think that vector gets added in too. So I say you actually want to point you laser 2 degrees west of where the sun is currently.
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