The sky on
your birthday.
Spin up of a Supermassive Black Hole
How fast can a black hole spin? This image explores the concept of a maximally rotating black hole, modeled by the Kerr solution to Einstein's General Theory of Relativity. One prediction is that matter entering such a black hole would emit X-rays at a specific energy. This could be a testable prediction for these extreme objects.
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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 12 March 2013 See it as a poster -
The Earth on your day The Earth on 12 March 2013 · Eye of the Sahara, Mauritania See it as a poster -
Released on 12 March 2018 Spirals and supernovae See it as a poster -
Released on 12 March 2003 Location of star HD 209458 (ground-based image) See it as a poster -
Released on 12 March 2010 Ring-shaped nebula around SN 1987A See it as a poster -
Released on 12 March 2014 The field around yellow hypergiant star HR 5171 See it as a poster -
Released on 12 March 2025 Clouds swirl over the Gulf of Alaska and underneath the aurora borealis See it as a poster
In tropical astrology, 12 MAR 2013 falls under Pisces (♓). The sign's window runs from 02-19 through 03-20. Pisces holds the location of the spring equinox in the current astronomical era. The Sun was crossing this region of the sky on 12 MAR 2013.
Questions about March 12, 2013
What space photo was released on March 12, 2013?
NASA's Astronomy Picture of the Day for March 12, 2013 was "Spin up of a Supermassive Black Hole". It's the card at the top of this page.
What was the Moon's phase on March 12, 2013?
A new moon, about 0% lit.
What day of the week was March 12, 2013?
March 12, 2013 was a Tuesday, day 71 of the 365 days in 2013.
What did the Sun and the Earth look like on March 12, 2013?
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.