The sky on
your birthday.
Flying Over the Earth at Night II
This serene video shows time-lapse sequences from the International Space Station of Earth at night. Green and red aurora borealis slather up the sky. The night scene tracks from northwest to southeast across North America, toward the Gulf of Mexico and the Florida coast. A second sequence follows European city lights, crosses the Mediterranean Sea, and passes over a bright Nile river in northern Africa.
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Released on your day
Space pictures released on your month and day in other years, or a few days either side. Each one is sharp enough to print as a poster.
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The Sun on your day The Sun on 23 April 2021 See it as a poster -
The Earth on your day The Earth on 23 April 2021 · Sahara, Algeria See it as a poster -
Released on 23 April 2010 SDO: The Extreme Ultraviolet Sun See it as a poster -
Released on 23 April 2010 Star Clusters Young and Old, Near and Far See it as a poster -
Released on 23 April 2025 Planetary nebula NGC 2899 See it as a poster -
Released on 23 April 2025 Barred Spiral Galaxy NGC 5335 See it as a poster -
Released on 23 April 2010 Wide view of “Mystic Mountain” See it as a poster
In tropical astrology, 23 APR 2021 falls under Taurus (♉). The sign's window runs from 04-20 through 05-20. Taurus holds the Pleiades star cluster and Aldebaran, the red giant that marks the eye of the Bull. The Sun was crossing this region of the sky on 23 APR 2021.
Questions about April 23, 2021
What space photo was released on April 23, 2021?
NASA's Astronomy Picture of the Day for April 23, 2021 was "Flying Over the Earth at Night II". It's the card at the top of this page.
What was the Moon's phase on April 23, 2021?
A waxing gibbous moon, about 86% lit.
What day of the week was April 23, 2021?
April 23, 2021 was a Friday, day 113 of the 365 days in 2021.
Was there a meteor shower on April 23, 2021?
Yes: the Lyrid shower, peaked yesterday.
What did the Sun and the Earth look like on April 23, 2021?
NASA's Solar Dynamics Observatory photographed the Sun that day, and NASA's Terra satellite photographed the whole Earth. Both are on this page, next to the card.
Is it free?
Yes. Seeing, sharing and downloading the card is free, and there's no account to make.