RT @physicsJ: Causes of variation: (1) meteor impacts on Earth or Moon. (2) reconfiguration of landmasses with earthquakes that generate ch…
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Data from de Azarevich et al., (2017) https://t.co/i5iCniDOja 🌝
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#AnnularSolarEclipse visible today! From the Earth-Moon distance as a function of time extracted from the the sedimentary record of the tides: https://t.co/4c8NueTjQT it follows that the first annular solar eclipse happened about 813 million years ago.
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RT @physicsJ: Data/info here is from a great science paper by de Azarevich et al., (2017) https://t.co/i5iCniDOja & references therein