Eclipses

Lunar Eclipses

Lunar eclipses — total, partial, and penumbral — with the geometry behind each. Completely safe to watch with the naked eye. Specific dates are prepared for published NASA predictions; none are fabricated.

Night SkyReference data

Types of lunar eclipse

Total Lunar Eclipse: The Moon passes fully into Earth's umbral shadow and often turns coppery red (a 'blood Moon'). Completely safe to watch with the naked eye.
Partial Lunar Eclipse: Only part of the Moon enters Earth's umbra, leaving a dark bite on the lunar disc.
Penumbral Lunar Eclipse: The Moon passes through Earth's faint outer shadow, producing only a subtle shading.

← All eclipses · Solar eclipses →

Sources & references

Facts on this topic will be cited from these primary and reference sources.

NASANational Aeronautics and Space Administration
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.

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