Happy Solstice!

I've been re-posting items from ten years back, and since the Solstice is almost always on June 21, this is a twofer.

Cycles of Time

The mystery of life - birth, growth, death, is almost certainly behind the ancient efforts to precisely know the seasons. They knew when to plant, and when to harvest - they didn't need any help there, and only a professor who never spent a day on a farm could think that.

And so the "ancient observatories" like Stonehenge aren't observatories at all. They're Cathedrals.

Happy Solstice. Grill something with your dad to celebrate. Photo from the always amazing NASA Astronomy Picture Of The Day.