Bright points of sunlight that briefly appear around the Moon immediately before and after a total eclipse of the Sun: Baily's beads are caused by sunlight shining through valleys on the Moon.

A chain of several bright "beads" of white light is visible just before or after totality at a solar eclipse.

The effect of Baily's beads occurs when bits of photosphere shine through valleys at the Moon's edge.

Baily's beads are named after Francis Baily (1774-1844), a British astronomer.

The effect seen during a total solar eclipse just before or after totality, when sunlight shines between lunar mountains or down lunar valleys.