How to Safely Watch a Total Solar Eclipse
On April 8, 2024, a total solar eclipse will cross North America.
A solar eclipse occurs when the Moon passes between the Sun and Earth,
fully or partially blocking the Sun’s light.
To safely observe a solar eclipse, wear eclipse glasses (not sunglasses) or use
an indirect viewing method.
If you're in the path of totality, here's how to safely watch the eclipse.
Phase 1 Glasses On Partial Eclipse
The Sun’s disk is partially blocked by the Moon. In most locations, this will last
over an hour. It is not safe to look directly at the Sun without specialized
eye protection.
Phase 2 Glasses On Diamond Ring
Sunlight streaming through the Moon’s valleys creates a single bright flash
of light. This marks the last few seconds before totality. It is not safe to look
directly at the Sun without specialized eye protection.
Phase 3 Glasses On Baily’s Beads
For a few moments, low-lying valleys on
the Moon’s edge allow sunlight to pass through. It is not safe to look
directly at the Sun without specialized eye protection.
Phase 4 Glasses Off Totality
The Moon completely covers the disk of the Sun. This can only be seen in the path of
totality and will last up to 4 ½ minutes. Totality is not visible through eclipse
glasses. Do not remove your eclipse glasses if you are outside the path.
Phase 5 Glasses On Final Stages
Following another diamond ring, a crescent shape begins to peek out from behind the
Moon. As the diamond ring reappears, wear your eclipse glasses or use an indirect
viewing method. It is not safe to look directly at the Sun without specialized
eye protection.
To learn more about eclipse safety visit go.nasa.gov/EclipseSafety