The sky on
your birthday.
The Holographic Principle and a Teapot
The holographic principle suggests that all the information in a 3D volume might be encoded on its 2D boundary. This image uses a teapot to illustrate the idea. It is a concept that challenges our understanding of reality, suggesting a deeper connection between dimensions. The principle has implications for quantum gravity and black hole thermodynamics.
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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 3 October 2021 See it as a poster -
The Earth on your day The Earth on 3 October 2021 · Colorado Plateau See it as a poster -
Released on 3 October 2012 The Helix Nebula: Unraveling at the Seams See it as a poster -
Released on 3 October 2011 Wide-field view of the region around the Antennae Galaxies See it as a poster -
Released on 3 October 2011 Spot the difference: Hubble spies another globular cluster, but with a secret See it as a poster -
Released on 3 October 2016 The centre of NGC 247 See it as a poster -
Released on 3 October 2011 Antenna Galaxies See it as a poster
In tropical astrology, 3 OCT 2021 falls under Libra (♎). The sign's window runs from 09-23 through 10-22. Libra is the only zodiac constellation named for an inanimate object, the scales of judgment. The Sun was crossing this region of the sky on 3 OCT 2021.
Questions about October 3, 2021
What space photo was released on October 3, 2021?
NASA's Astronomy Picture of the Day for October 3, 2021 was "The Holographic Principle and a Teapot". It's the card at the top of this page.
What was the Moon's phase on October 3, 2021?
A waning crescent moon, about 10% lit.
What day of the week was October 3, 2021?
October 3, 2021 was a Sunday, day 276 of the 365 days in 2021.
What did the Sun and the Earth look like on October 3, 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.