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Quantum compass might help birds 'see' magnetic fields
Nature Podcast
Could Aliens Be Looking Back at Earth?
Could alien astronomers somewhere be recording the blink of the sun as the earth orbits? And if so, what might they be seeing? One of the authors is lisa caltenege from el university in the us. She told me about the data set used to make the calculations. Is this amazing mission up right now,. It's called the gia mission, from the european space agency. Because it measures over a couple of years, it tells where the stars are going and where they came from. So if we go with civilizations on the earth, roughly five thousand years ago, civilization started to bloom on our planet, who could have seen us since then?
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