Astronomy Picture of the Day ·

Keogram: The Sky in 2025

The Astronomy Picture of the Day for June 21, 2026 is “Keogram: The Sky in 2025,” an image. It is credited to Image Credit & License: Cees Bassa ( Netherlands Institute for Radio Astronomy ). The original explanation runs about 173 words.

An image of the sky over the Netherlands taken every 15 seconds during 2025. Visible are night, day, solstices, equinoxes, moonglow, the blue hour, and more. Please see the explanation for more detailed information.
Credit: Image Credit & License: Cees Bassa ( Netherlands Institute for Radio Astronomy ) Shown from science.nasa.gov. Not hosted by OpenOrbit.

From the explanation

“What if you could see the entire sky — all at once — for an entire year? That, very nearly, is what is pictured here.”

— APOD editors, June 21, 2026

Read the full explanation on science.nasa.gov

At a glance

Date
June 21, 2026
Type
Image
Credit
Credit: Image Credit & License: Cees Bassa ( Netherlands Institute for Radio Astronomy )
Copyright
No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
Explanation length
About 173 words

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On this day: June 21 in other years

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Source

Copy taken Oct 28, 2026, 2:39 AM EDT. The image and explanation belong to their creators. OpenOrbit is not affiliated with or endorsed by NASA.