posted on Dec, 31 2012 @ 02:14 PM
My favorite for this year:
Deepest image of the universe ever taken - 5500 galaxies in 2 arcminutes in size!!
Called eXtreme Deep Field (XDF) this picture is the result of 10 years of work from Hubble, NASA, ESA and XDF/HUDF09 teams.
Exposure time was of 22.5 days (2 million seconds); the picture is a composite view of separate exposures acquired by the ACS and WFC3/IR instruments.
Several filters were used to sample various wavelengths. The color results from assigning different hues (colors) to each monochromatic (grayscale)
image from the eight different filters used by the two instruments.
What did the first galaxies look like? To help answer this question, the Hubble Space Telescope has just finished taking the eXtreme Deep Field
(XDF), the deepest image of the universe ever taken in visible light. Pictured above, the XDF shows a sampling of some of the oldest galaxies ever
seen, galaxies that formed just after the dark ages, 13 billion years ago, when the universe was only a few percent of its present age. The Hubble
Space Telescope's ACS camera and the infrared channel of the WFPC3 camera took the image. Combining efforts spread over 10 years, the XDF is more
sensitive, in some colors, than the original Hubble Deep Field (HDF), the Hubble Ultra Deep Field (HUDF) completed in 2004, and the HUDF Infrared
completed in 2009. Astronomers the world over will likely study the XDF for years to come to better understand how stars and galaxies formed in the
Full extra-large picture (1.63Mb) can be downloaded from the Hubble
5500 galaxies in 2 arcminutes!! Wow
edit on 31-12-2012 by elevenaugust because: (no reason given)