The sky on
your birthday.
Simulation: Formation of the First Stars
The SPHINX computer simulation models the formation of the first stars in the early universe. This video shows matter clumping together as time progresses, starting 100 million years after the Big Bang. Initially, the universe was dark and uniformly spread. Over time, slight matter concentrations, rich in hydrogen gas, began to coalesce, eventually leading to the birth of the first stars.
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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 30 June 2021 See it as a poster -
The Earth on your day The Earth on 30 June 2021 · Persian Gulf See it as a poster -
Released on 30 June 2010 The R Coronae Australis region imaged with the Wide Field Imager at La Silla* See it as a poster -
Released on 30 June 2025 The young stars of Taurus See it as a poster -
Released on 30 June 2014 A fossil in the making See it as a poster -
Released on 30 June 2004 The Orion Nebula (M42) See it as a poster -
Released on 30 June 2020 Wide-field view of the region of the sky where the Kinman Dwarf galaxy is located See it as a poster
In tropical astrology, 30 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 30 JUN 2021.
Questions about June 30, 2021
What space photo was released on June 30, 2021?
NASA's Astronomy Picture of the Day for June 30, 2021 was "Simulation: Formation of the First Stars". It's the card at the top of this page.
What was the Moon's phase on June 30, 2021?
A waning gibbous moon, about 71% lit.
What day of the week was June 30, 2021?
June 30, 2021 was a Wednesday, day 181 of the 365 days in 2021.
What did the Sun and the Earth look like on June 30, 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.