The sky on
your birthday.
“Triple Transit and Mutual Events” is copyrighted by Christopher Go. NASA has permission to show it and we don't, so it isn't on this card.
See it on NASA's siteHere, Jupiter's moons dance. Io disappears into shadow, while Europa and Ganymede appear as bright and dark disks against the gas giant's banded face. This triple transit, captured from Cebu City in the Philippines, shows the intricate ballet of our solar system. Jupiter, a ruling gas giant, offers a remarkable performance.
The Sun on 21 August 2021
NASA SDO took this picture on 21 August 2021, the day itself, not a release date.
We cannot put this date's photograph on paper at poster size. We can print the nearest public archive plate to your date instead.
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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 21 August 2021 See it as a poster -
The Earth on your day The Earth on 21 August 2021 · Red Sea See it as a poster -
Released on 21 August 2023 Webb captures detailed beauty of Ring Nebula (NIRCam image) See it as a poster -
Released on 21 August 2023 Webb captures detailed beauty of Ring Nebula (NIRCam image - cropped) See it as a poster -
Released on 21 August 2023 Webb captures detailed beauty of Ring Nebula (MIRI image - cropped) See it as a poster -
Released on 21 August 2023 Hubble’s view of the Ring Nebula (2013 image - cropped) See it as a poster -
Released on 21 August 2017 2017 Total Solar Eclipse See it as a poster
In tropical astrology, 21 AUG 2021 falls under Leo (♌). The sign's window runs from 07-23 through 08-22. Leo is anchored by Regulus, the heart of the Lion, twenty-four parsecs from Earth. The Sun was crossing this region of the sky on 21 AUG 2021.
Questions about August 21, 2021
What space photo was released on August 21, 2021?
NASA's Astronomy Picture of the Day for August 21, 2021 was "Triple Transit and Mutual Events". It's a photographer's copyrighted image, so we link to it on NASA's site and show the Sun or the Earth that day instead.
What was the Moon's phase on August 21, 2021?
A full moon, about 97% lit.
What day of the week was August 21, 2021?
August 21, 2021 was a Saturday, day 233 of the 365 days in 2021.
What did the Sun and the Earth look like on August 21, 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.