Conversation so far:
what is the ring of light around the sun during an eclipse called
In an annular eclipse, the Sun appears as a very bright ring, or annulus, surrounding the dark disk of the Moon.
What's the cause of an annulus
An annular eclipse occurs when the apparent size of the Moon is smaller than that of the Sun

Question: What other kinds are there
Self-contained rewrite: what other kinds of solar eclipses are there besides annular eclipses