Wow we can see totally useless stuff in hi def.
You think knowledge is useless? Interesting.
Without science like this we would not be able to use GPS. This is absolute proof of Einstein’s theory of relativity.
That is just one example of how ‘useless’ knowledge like this translates over to everyday life.
And Velcro. We have NASA to thank for Velcro. Or was it the aliens? I forget.
And you think this is useless. An incurious mind is truly a very sad thing.