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Descartes Labs on Twitter: "NO₂ hotspots seen around #india and #china. See more eerie NO₂ maps created using #data from @esa @Sentinel5p in our latest blog post. #nitrogendioxide #emissions #powerplants #fossilfuels #Sentinel5p
Measuring the speed of light and the moon distance with an occultation of Mars by the Moon: a Citizen Astronomy Campaign
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