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If I shot/flash lights up to the sky, will the lights or photons fly up to the sky then to the space then to the top of the universe?? Will it stop?
The light will travel until one of two things happens to it: Either it will be absorbed because space is not completely empty, or it will spread out until it becomes too weak to detect. That's assuming that it makes it past the atmosphere of the earth, which it won't on a cloudy day.If I shot/flash lights up to the sky, will the lights or photons fly up to the sky then to the space then to the top of the universe?? Will it stop?
The light will travel until one of two things happens to it: Either it will be absorbed because space is not completely empty, or it will spread out until it becomes too weak to detect. That's assuming that it makes it past the atmosphere of the earth, which it won't on a cloudy day.
And the effect of the clouds is to scatter the light.
And the universe doesn't have a top.
Thanks for your answers.
One more question..
If I flash the light onto the wall which is far from myself, why does the light become weak or even disappear?? But, if the wall is near, why does the light become strong?
What absorbs the light in its travel to the wall?
If I flash the light onto the wall which is far from myself, why does the light become weak or even disappear?? But, if the wall is near, why does the light become strong?