The sky on
your birthday.
Oceans Under Jupiters Callisto
Jupiter's moon Callisto, seen here in a true-color image from the Galileo spacecraft, is the second largest moon of Jupiter. It is the third largest moon in the Solar System. Callisto is about the same size as the planet Mercury. The moon's surface is heavily cratered and ancient, but underneath its icy shell, there is evidence for a salty ocean.
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 Earth on your day The Earth on 31 July 2001 · Caspian Sea See it as a poster -
Released on 31 July 2023 NGC 6652 See it as a poster -
Released on 31 July 2007 Wide-field ground-based astrophoto of the Veil Nebula See it as a poster -
Released on 31 July 2017 The Hockey Stick Galaxy See it as a poster -
Released on 31 July 2017 Spot the cluster See it as a poster -
Released on 31 July 2022 The sun illuminates Earth's limb as the International Space station soared 271 miles above the Pacific Ocean south See it as a poster
In tropical astrology, 31 JUL 2001 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 31 JUL 2001.
Questions about July 31, 2001
What space photo was released on July 31, 2001?
NASA's Astronomy Picture of the Day for July 31, 2001 was "Oceans Under Jupiters Callisto". It's the card at the top of this page.
What was the Moon's phase on July 31, 2001?
A waxing gibbous moon, about 82% lit.
What day of the week was July 31, 2001?
July 31, 2001 was a Tuesday, day 212 of the 365 days in 2001.
What did the Sun and the Earth look like on July 31, 2001?
NASA's Terra satellite photographed the whole Earth that day. It's 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.