Helioseismic data traces the solar dynamo to the tachocline about 200,000 km down.
Every eleven years, the sun's magnetic field flips. Sunspots—dark, cooler regions on the sun's surface that mark intense magnetic activity and often trigger solar eruptions—appear at mid-latitudes and ...
Researchers at ETH Zürich have built the most powerful miniature superconducting magnets ever demonstrated, ...