Everything is spinning or circling, or both. The moon goes round the Earth, the Earth goes round the sun, the sun goes round the galaxy, the galaxy goes round the universe. These orbits are what hold ...
Boulder, Colo., USA: A new study of zircon crystals from two of Earth’s oldest continents indicates that the formation of Earth’s continental crust goes through cycles, with periods of increased crust ...
Spiral Galaxy from Kirkland et al. CREDIT Chris Kirkland and colleagues. A new study of zircon crystals from two of Earth’s oldest continents indicates that the formation of Earth’s continental crust ...
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