The sky on
your birthday.
Star Cluster R136 Bursts Out
The star-forming region 30 Doradus, also known as the Tarantula Nebula, contains the massive star cluster R136. This cluster holds some of the largest, hottest, and most massive stars we know. Their powerful winds and ultraviolet radiation sculpt the surrounding gas and dust. The Wide Field Camera on the Hubble Space Telescope captured this view in visible light.
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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 December 2009 · Eye of the Sahara, Mauritania See it as a poster -
Released on 21 December 2015 SN Refsdal: The First Predicted Supernova Image See it as a poster -
Released on 21 December 2006 Portrait of a dramatic stellar crib* See it as a poster -
Released on 21 December 2022 A Wreath of Star Formation in NGC 7469 See it as a poster -
Released on 21 December 2023 Webb spots a second lensed supernova in a distant galaxy See it as a poster -
Released on 21 December 2020 Saturn and Jupiter Conjunction See it as a poster
In tropical astrology, 21 DEC 2009 falls under Sagittarius (♐). The sign's window runs from 11-22 through 12-21. Sagittarius points straight at the center of the Milky Way, our galaxy's brightest region. The Sun was crossing this region of the sky on 21 DEC 2009.
Questions about December 21, 2009
What space photo was released on December 21, 2009?
NASA's Astronomy Picture of the Day for December 21, 2009 was "Star Cluster R136 Bursts Out". It's the card at the top of this page.
What was the Moon's phase on December 21, 2009?
A waxing crescent moon, about 21% lit.
What day of the week was December 21, 2009?
December 21, 2009 was a Monday, day 355 of the 365 days in 2009.
Was there a meteor shower on December 21, 2009?
Yes: the Ursid shower, peaks tomorrow.
What did the Sun and the Earth look like on December 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.