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.
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This one’s worth listening to twice! Nice…
wooo! Astronomy Cast! So many hours at work spent surreptitiously listening to it 🙂
wooo! Astronomy Cast! So many hours at work spent surreptitiously listening to it 🙂