Sunspots

As the sun headed for the horizon this evening, it shone through a gap in the Venetian blinds covering the western window of our living room, effectively a pinhole. The light shining through that pinhole reached the door in the hall, about five yards away.

I looked at the round spot of light; then I grabbed a blank sheet of paper and held it perpendicular to the sunlight.

Circumstance had created a pinhole camera image of the sun. And there on its face were three sunspots, two of them being rather substantial.

Later, I found that Avedon Carol had linked to this report on solar flares.