Anonymous ID: 285936 July 29, 2022, 7:26 a.m. No.16931788 🗄️.is 🔗kun >>1895 >>1929 >>1994 >>2047 >>2151 >>2202 >>2215 >>2221 >>2272 >>2383 >>6807 >>1112 >>16929545 Magnetosphere measurements. They are called Schumann resonances.