RT @[email protected]

Here's a visualization of all the NOAA active regions on the Sun over the past solar cycle (SC24) and their evolution - the butterfly diagram (top) can clearly be seen 🌞 made via @[email protected] to query the HEK and visualized with @[email protected]

🐦🔗: https://twitter.com/laura_hayess/status/1299054689724575744