Astronomy Picture of the Day ·

Rainbow Airglow over the Azores

The Astronomy Picture of the Day for April 18, 2021 is “Rainbow Airglow over the Azores,” an image. The picture is copyrighted by its creator (Image Credit & Copyright: Miguel Claro ( TWAN ); Rollover Annotation: Judy Schmidt). The original explanation runs about 193 words.

Rainbow airglow over the Azores. See Explanation. Moving the cursor over the image will bring up an annotated version. Clicking on the image will bring up the highest resolution version available.
Credit: Image Credit & Copyright: Miguel Claro ( TWAN ); Rollover Annotation: Judy Schmidt Copyrighted Shown from science.nasa.gov. Not hosted by OpenOrbit.

From the explanation

“Why would the sky glow like a giant repeating rainbow? Airglow .”

— APOD editors, April 18, 2021

Read the full explanation on science.nasa.gov

At a glance

Date
April 18, 2021
Type
Image
Credit
Credit: Image Credit & Copyright: Miguel Claro ( TWAN ); Rollover Annotation: Judy Schmidt
Copyright
Copyrighted by the credited creator. Ask the copyright holder before reusing it.
Explanation length
About 193 words

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Topics in this entry

Andromeda GalaxyGalaxies

Topics are matched from words in the title and explanation.

On this day: April 18 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.