An annular eclipse occurs when the Sun and Moon are exactly in line, but the apparent size of the Moon is smaller than that of the Sun. Hence the Sun appears as a very bright ring, or annulus, surrounding the outline of the Moon.
When I see the moon in the daytime, I can’t help but think of it as a strangely round mountain range waaaay off in the distance. Did you know that the moon is getting farther away from the Earth as time goes on? Right now it’s the size of a dime held at arm’s length, but during the time of the dinosaurs it was as large as holding a dish plate at arm’s length. Imagine that for a moment…
© 1999-2022 Eric P. Metze