Our conclusion from our STEM at Home theory is that the sky is blue, but only if you are on earth.
This was tough to run as an experiment because it’s not like we could experiment with the sky, so we watched a lot of videos.
We found that the sky appears to be blue because of light waves. We can see the blue light wave when it hits the earth’s atmosphere (which is filled with water). Generally, only the blue light wave can be seen, thus the sky appears blue.
It is the same for the ocean. The ocean’s water is actually transparent. From a distance it appears blue because of how the sun’s light waves are being reflected in by the water.
Here’s more information here is a good video I found and included in last week’s introduction to the sky is blue theory, and there is a cool experiment you can do in here:
BTW – If you are in outer space and looking at the earth there is no sky!
