Astronomy Cast

Wizzard Media

Science & Medicine, Natural Sciences

Chart Positions

Natural Sciences 10
Science & Medicine 25

Astronomy Cast brings you a weekly fact-based journey through the cosmos.


Ep. 238: Solar Activity

November 7th, 2011

Episode 271 of 460 episodes

The Sun looks like a harmless burning ball of fire in the sky: warm, life-giving and forever unchanging. But we know better, don’t we. It’s really a massive ball of churning hydrogen plasma, encased in twisting magnetic field lines, speckled with sunspots, and constantly disgorging vast plumes of radiation and charged particles. The Sun is very active indeed.