The sky on
your birthday.
STARFORGE: A Star Formation Simulation
How do stars form? This simulation, called STARFORGE, shows gas clouds 20,000 times the mass of our Sun collapsing to form stars. The simulation accounts for stellar winds, jets, high-energy starlight, and supernova explosions. Lighter regions indicate denser gas, and color shows gas speed, revealing the complex interactions that shape star formation.
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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 June 2021 See it as a poster -
The Earth on your day The Earth on 23 June 2021 · Sahara, Algeria See it as a poster -
Released on 23 June 2009 Molecular Cloud Barnard 68 See it as a poster -
Released on 23 June 2026 Messier 82 (Hubble 2006 image) See it as a poster -
Released on 23 June 2026 M82 (Webb NIRCam image) See it as a poster -
Released on 23 June 2026 Galaxy field of MXDFz4.4 (Hubble and Webb clean image) See it as a poster -
Released on 23 June 2026 The Cigar Galaxy: M82 (Webb and Hubble image) See it as a poster
In tropical astrology, 23 JUN 2021 falls under Cancer (♋). The sign's window runs from 06-21 through 07-22. Cancer is marked by the Beehive Cluster, M44, a loose family of stars visible to the naked eye on a dark night. The Sun was crossing this region of the sky on 23 JUN 2021.
Questions about June 23, 2021
What space photo was released on June 23, 2021?
NASA's Astronomy Picture of the Day for June 23, 2021 was "STARFORGE: A Star Formation Simulation". It's the card at the top of this page.
What was the Moon's phase on June 23, 2021?
A full moon, about 97% lit.
What day of the week was June 23, 2021?
June 23, 2021 was a Wednesday, day 174 of the 365 days in 2021.
What did the Sun and the Earth look like on June 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.