Solar wind 420 km/s. Field 5 nT, level. Kp 1: quiet. Last flare B3.7, 09:32 UTC.
Looking at the sky over Kyoto.
The sun's weather is read every ten minutes from NOAA's Space Weather Prediction Center, the satellites' orbits from CelesTrak, and what is over Kyoto is worked out in this browser. Nothing is recorded; the sound is made from the numbers here, and begins only when asked.
Above the weather there is more weather. The sun blows a wind that takes two days to arrive, and the Earth's field rings with it.
Nothing here is recorded. The wind is a drone pitched by its speed; the aurora sings as far as the field is shaken; a flare is a strike. Each satellite over Kyoto is one tone, rising and falling as it passes.
Most of the time nothing is overhead, and the silence is honest. Listen long enough and a voice wears: fainter, or lower and duller, where it has been heard most.