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I heard a statement and not sure how to verify it, so asking here. So the statement is that from lets say 40 degrees north lat you can see all the northern constellations from any longitude, but the same is not true if you are at -40 degrees lat.. or southern hemisphere. So at south at that...

I find this information very very interesting.. nasa claims this is how sun rotates https://www.metabunk.org/data/MetaMirrorCache/87d6e32ff611999d6ffedfd978e83f31.gif And yet.. when we take timelapse images of the sun the result we get is clockwise and counterclockwise rotation of the sun...

captain Cooks ship logs suposedly indicate that he traveled arround 60 000 miles to circumnavigate antarctica.. don't know how much time a plane would need to cover that distance.. but time it took him to do it and miles crossed indicate he was not going arround a small iceberg..

I ran into some cases when the lit moon does not match position of the sun.. I think if the sun is 93 million miles away seeing moon during day would be tricky.. because moon is much closer.. so would the sun not light up the same backside of the moon that is facing away from us? here is an...

So, if moon is trully reflecting suns light, the quality of light should remain the same, that is warm, yet when we measure the quality of moons light the results show that moonlight cools things that are exposed to it. This means that measured temperatures of things that are in moon shade are...