FR Training Part 1: Related Science

The moon’s black disk completely covers the sun. Now, in the absence of the sun’s full light, its massive outer corona is revealed. Uniquely visible during a full eclipse, grand flourishes of light called helmet streamers extend in all directions behind the moon’s black disk. At the edge of the moon, the helmet streamers are intensely bright, fading to wisps of ghostly white as they stretch across space, far from the moon, like flower petals.

Total Solar Eclipse Phases

The Moon appears as a smooth black disk that blocks the center of the Sun. As a result, the Sun appears to be a very bright ring of fire, glowing around the Moon’s circular edge.

Eclipse Maximum

The Sun appears as a glowing, white disk against a black background. On the left side of the Sun, a small, U-shaped area appears missing from the Sun’s perfect circle shape. This missing area is the Moon as it begins to slide in front of the Sun. The Moon appears completely black and smooth.

Annular Eclipse Phases