The sky on
your birthday.
EHT Resolves Central Jet from Black Hole in Cen A
The Event Horizon Telescope imaged the core of Centaurus A, a galaxy 12 million light-years away. It shows a powerful jet of material blasting out from the supermassive black hole. The image reveals two bright edges, suggesting the jet itself is hollow.
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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 4 August 2021 See it as a poster -
The Earth on your day The Earth on 4 August 2021 · Caspian Sea See it as a poster -
Released on 4 August 2014 IC 4499: A globular cluster’s age revisited See it as a poster -
Released on 4 August 2005 Hubble Spies a Zoo of Galaxies See it as a poster -
Released on 4 August 2025 A sea monster and a Tarantula See it as a poster -
Released on 4 August 2019 The Milky Way lights up an orbital night pass as the International Space Station orbited 257 miles above the Coral Sea See it as a poster -
Released on 4 August 2023 The sun's glint and the deep blue waters of the Mediterranean Sea stand in stark contrast to the desert coast of Libya See it as a poster
In tropical astrology, 4 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 4 AUG 2021.
Questions about August 4, 2021
What space photo was released on August 4, 2021?
NASA's Astronomy Picture of the Day for August 4, 2021 was "EHT Resolves Central Jet from Black Hole in Cen A". It's the card at the top of this page.
What was the Moon's phase on August 4, 2021?
A waning crescent moon, about 16% lit.
What day of the week was August 4, 2021?
August 4, 2021 was a Wednesday, day 216 of the 365 days in 2021.
What did the Sun and the Earth look like on August 4, 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.