The sky on
your birthday.
Martian Dust Devil Trails
Martian dust devils leave twisting dark trails across the planet's surface. These miniature wind vortices are columns of rising air heated by the warm ground. The HiRISE camera on the Mars Reconnaissance Orbiter captured this image of their tracks.
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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 21 October 2009 · Pilbara, Western Australia See it as a poster -
Released on 21 October 2019 A Familiar Sight See it as a poster -
Released on 21 October 2013 Hubble snaps icy comet ISON See it as a poster -
Released on 21 October 2013 Saturn from Above See it as a poster -
Released on 21 October 2025 4MOST first-light field-of-view See it as a poster -
Released on 21 October 2024 The French atoll of Bassas da India in the Mozambique Channel See it as a poster
In tropical astrology, 21 OCT 2009 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 21 OCT 2009.
Questions about October 21, 2009
What space photo was released on October 21, 2009?
NASA's Astronomy Picture of the Day for October 21, 2009 was "Martian Dust Devil Trails". It's the card at the top of this page.
What was the Moon's phase on October 21, 2009?
A waxing crescent moon, about 7% lit.
What day of the week was October 21, 2009?
October 21, 2009 was a Wednesday, day 294 of the 365 days in 2009.
Was there a meteor shower on October 21, 2009?
Yes: the Orionid shower, peak tonight.
What did the Sun and the Earth look like on October 21, 2009?
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.