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Image of Earth split by the terminator line. The terminator divides Earth’s surface diagonally, shrouding the top left half in darkness. Earth’s illuminated surface is mostly blue and covered in swirling white clouds.

Night and (Earth) Day

This image, released in celebration of Earth Day, shows the terminator – the line between night and day – on Earth. The Artemis II astronauts captured this view on April 2, 2026, during their journey to the Moon.

Image Credit: NASA

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