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  • Three images showing the two regions of a lunar eclipse.
    Rights: Tomruen CC BY-SA 4.0 Published 24 November 2017 Size: 570 KB Referencing Hub media

    Using different camera exposures, 1/80, 2/5 and 2 seconds, the two regions of a lunar eclipse can be seen. The outer penumbral shadow is where the sunlight is dimmed and the inner umbral shadow is where the much dimmer sunlight can be seen as a red colour as it reflects through the Earth’s atmosphere.

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