December 4, 2012 9:14
New astronomical observations allowed astronomer discovered the old space object which received the palm as the most distant space object among all objects known to man today. The new record holder is a galaxy MACS0647-JD, which is located at a distance of 13.3 billion light years from Earth. It is believed that the age of the universe is 13.7 billion years old, so that light from a distant galaxy MACS0647-JD went to the Earth for almost the entire history of our space and time.
Astronomers have discovered a galaxy MACS0647-JD, using NASA's Hubble space telescopes, and Spitzer, by cosmic magnification of natural origin. In the role of the zoom, in other words, huge lenses which group of galaxies, the total gravitational field distorts the space-time, creating what astronomers call a gravitational lens. Through this lens, the light from the galaxy MACS0647-JD on the way to Earth was focused, which allowed scientists to zoom in a distant galaxy.
"Galaxy cluster acting as a gravitational lens has allowed us to do what could not be achieved using even the most powerful telescope," — says Marc Postman (Marc Postman), scientist and astronomer at the Space Telescope Science Institute in Baltimore, Maryland. — "Without further enhance our efforts to consider distant galaxy MACS0647-JD not been a success." Marc Postman heads a research group Cluster Lensing And Supernova Survey with Hubble (CLASH), which deals with the observations of distant space objects with the effect of gravitational lenses.
A distant galaxy MACS0647-JD is only a tiny drop in a "sea" of the universe, its size is much smaller than our own Milky Way galaxy. Galaxy MACS0647-JD is the oldest object in the universe known to man, it emerged at a time when the entire universe was a "child" who was only 420 million years of the birth of 3 percent of its present age.
The diameter of the mini-galaxy MACS0647-JD is only 600 light years, for comparison, the diameter of the Milky Way is about 150 thousand light years. Astronomers believe that later, in the time that we do not yet see the galaxy MACS0647-JD combine with other neighboring galaxies, creating one large galaxy.
Space object, which until recently was the most distant object was galaxy SXDF-NB1006-2, located at a distance of 12.91 billion light-years from Earth. Galaxy SXDF-NB1006-2 was detected by telescopes Subaru and Keck in Hawaii. But scientists and astronomers are constantly improving their methods of observation, astronomical tools are constantly being upgraded. Because of this, astronomers are able to look into the depths of space at great distances and, in my view, the galaxy MACS0647-JD will not long be the most distant object known to man.