The solar eclipse
We remind you of an opportunity next month.
The most dangerous things are those that don’t come often enough.
The recent solar eclipse demonstrates much more than astronomy. (Image: one page of Guy Ottwell’s The Under-Standing of Eclipses, available here)
Some people put tremendous effort into extending and filling in their family trees. In the end, what purpose does it serve?
Proving that something doesn’t exist is hard, though it can be done. More often, scientists work out more and more restrictions on the characteristics something can have, until the idea has no place left to hide.