I plotted daily Bitcoin price in USD (close) against solar radio flux F10.7 for 2–31 October 2025 to check whether solar activity might be nudging the market. • BTC data: daily close in USD • Solar data: daily F10.7 flux (10.7 cm) from NOAA, a standard proxy for solar activity • Period: 30 days (Oct 2–31, 2025)

On the chart you can spot a few moments where they seem to move in opposite directions (sun up, BTC down and vice versa), but statistically the relationship is basically noise: correlation is very close to zero on price levels and only slightly negative on day-to-day changes.

So for this one-month window, it looks like there’s no usable edge from solar activity on BTC price. Still a fun crossover between space weather and crypto—next step would be to extend this to 6–12 months, add geomagnetic Kp index, and look at hashrate / mempool fees instead of just price. For now, you probably can’t blame your bad entries on the Sun. 🌞🧡🟧