In today's image, we see noctilucent clouds up high in the sky as seen in Sweden recently. These clouds are high in the sky so that the Sun is still above the horizon from their perspective even though the Sun will have set for an observer on the ground.

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This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the photo corresponding to the date of this podcast.

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