corona
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Radiation Spikes in Tree Rings Came From Mystery Cosmic Storms, Aussie Scientists Say
Six spikes in Earth’s radiation levels, recorded in tree rings, may represent an unknown extreme astrophysical event.
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How Cold War Spy Satellites Revealed 10,000 Lost Cities And Ruins
CORONA was the codename for the United States’ first photographic spy satellite mission. For 12 years, it brought back intel on the USSR, China and the Middle East. But that wasn’t all its grainy, black and white images captured — it turns out it also caught an incredible number of undiscovered ancient settlements.