The sky on
your birthday.
Hot Gas In Hydra A
The Hydra A galaxy cluster is one of the largest gravitationally bound objects in the universe. This Chandra Observatory X-ray image shows the extremely hot gas, at 40 million degrees, that permeates the cluster. Individual galaxies are too cool to be seen in this X-ray view. Astronomers expected this gas to be cooling and flowing smoothly, but observations reveal a more complex dynamic.
We cannot put this date's photograph on paper at poster size. We can print the nearest public archive plate to your date instead.
See print sizesPrinted, shipped and sold by Zazzle
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.
-
Released on 17 December 2014 Wide-field view of the bright star clusters Messier 47 and Messier 46 See it as a poster -
Released on 17 December 2015 HH 24 (ground-based view) See it as a poster -
Released on 17 December 2013 Hubble image of variable star RS Puppis See it as a poster -
Released on 17 December 2012 The Needle Galaxy See it as a poster -
Released on 17 December 2014 The star cluster Messier 47 See it as a poster
In tropical astrology, 17 DEC 1999 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 17 DEC 1999.
Questions about December 17, 1999
What space photo was released on December 17, 1999?
NASA's Astronomy Picture of the Day for December 17, 1999 was "Hot Gas In Hydra A". It's the card at the top of this page.
What was the Moon's phase on December 17, 1999?
A waxing gibbous moon, about 70% lit.
What day of the week was December 17, 1999?
December 17, 1999 was a Friday, day 351 of the 365 days in 1999.
Was there a meteor shower on December 17, 1999?
Yes: the Geminid shower, peaked 3 days ago.
Is it free?
Yes. Seeing, sharing and downloading the card is free, and there's no account to make.