How to Safely Watch a Total Solar Eclipse

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Transcript:

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 GLASSESS 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