The sky on
your birthday.
Cooling Neutron Star
Cassiopeia A, or Cas A, is a supernova remnant about 11,000 light-years away. The light from this massive star's death explosion reached Earth 330 years ago. The expanding debris cloud is about 15 light-years across, and at its center is a neutron star. This neutron star, the collapsed remains of the stellar core, is still hot enough to emit X-rays as it cools.
We cannot put this date's photograph on paper at poster size. We can print the nearest public archive plate to your date instead.
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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 5 March 2011 See it as a poster -
The Earth on your day The Earth on 5 March 2011 · Red Sea See it as a poster -
Released on 5 March 2015 Galaxy cluster MACS j1149.5+223 See it as a poster -
Released on 5 March 2018 Galaxy full of cosmic lighthouses See it as a poster -
Released on 5 March 2020 The night lights of Seoul, South Korea, and surrounding cities are pictured from the International Space Station as it See it as a poster -
Released on 5 March 2025 An atmospheric glow blankets Earth's horizon as city lights outline the northwestern coast of the United States See it as a poster -
Released on 5 March 2025 City lights dot the Canadian landscape underneath an aurora See it as a poster
In tropical astrology, 5 MAR 2011 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 5 MAR 2011.
Questions about March 5, 2011
What space photo was released on March 5, 2011?
NASA's Astronomy Picture of the Day for March 5, 2011 was "Cooling Neutron Star". It's the card at the top of this page.
What was the Moon's phase on March 5, 2011?
A new moon, about 0% lit.
What day of the week was March 5, 2011?
March 5, 2011 was a Saturday, day 64 of the 365 days in 2011.
What did the Sun and the Earth look like on March 5, 2011?
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.