Penumbral lunar eclipse

What happens

The Moon passes through Earth's shadow. Sunlight bent by our atmosphere still reaches it, so instead of going dark the disc dims and often turns a deep copper red.

At its deepest, about 0% of the Moon's disc lies inside Earth's shadow.

How to watch

• Safe to watch with the naked eye at every stage. No filter is needed.
• Let your eyes adjust for twenty minutes and keep bright screens away.
• Binoculars deepen the colour, but nothing is required to see it.

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