The sky on
your birthday.
Seeing Titan
Saturn's largest moon, Titan, has a thick atmosphere that makes it hard to see in visible light. Small particles in the upper atmosphere scatter light, hiding the surface. Infrared wavelengths can penetrate this haze better, revealing surface features. This image shows Titan in visible light, surrounded by clearer global infrared views.
Heavy matte paper, about 200 gsm, printed in the United States and shipped free. The card stays free, the print is the thing you keep.
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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 31 March 2023 See it as a poster -
The Earth on your day The Earth on 31 March 2023 · Eye of the Sahara, Mauritania See it as a poster -
Released on 31 March 2010 Around the star-formation region Gum 19 (RCW 34) See it as a poster -
Released on 31 March 2025 A galaxy that gives great feedback See it as a poster -
Released on 31 March 2021 M87's Central Black Hole in Polarized Light See it as a poster -
Released on 31 March 2016 The galactic centre See it as a poster -
Released on 31 March 2005 Hubble spies cosmic dust bunnies See it as a poster
In tropical astrology, 31 MAR 2023 falls under Aries (♈). The sign's window runs from 03-21 through 04-19. Aries is the constellation traditionally tied to spring's arrival in the northern hemisphere. The Sun was crossing this region of the sky on 31 MAR 2023.
Questions about March 31, 2023
What space photo was released on March 31, 2023?
NASA's Astronomy Picture of the Day for March 31, 2023 was "Seeing Titan". It's the card at the top of this page.
What was the Moon's phase on March 31, 2023?
A waxing gibbous moon, about 71% lit.
What day of the week was March 31, 2023?
March 31, 2023 was a Friday, day 90 of the 365 days in 2023.
What did the Sun and the Earth look like on March 31, 2023?
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.