The Hubble Space Telescope continues to amaze us: it has captured the farthest galaxy for which records are kept, has never been reached at these cosmic distances.
Coincidence or not, the HubbleHe's been very happy for the last few years of service. A few days ago we saw how the space telescope had been able to detect the largest black hole ever known and now NASA announces it has news about a galaxy, and it's not just any.
His name is GN-z11 no it's not very attractive but now go down in history for being the most distant galaxy that has been discovered to date.
A galaxy created 400 million years after the Big Bang
The GN-z11 galaxy had already been detected 2 years ago, but at that time Hubble's observations led to the calculation that it would be at a distance of about 13.2 billion light years from Earth, however, it is still further away.
Astronomers have been conducting further studies of deep space with instruments from the Hubble space telescope, this time varying the visible wavelengths, so that they have been able to measure more precisely the distance traveled by the photons before reaching the telescope itself.
The result is that theGN-z11 is 13.4 billion light years away, 200 million years more than was initially calculated, it is the most distant galaxy ever discovered, located in the direction of the Ursa Major constellation and it is estimated that its formation was only about 400 million years after the great explosion of the big Bang.
It may seem like a brutality of time, but the reality is that Hubble has detected a galaxy in its infancy.
Hubble continues to wage war until the James Webb and WFIRST telescope arrives
Even astronomers surprised that Hubble was able to detect this galaxy so far away, because it is practically at the limit of its possibilities.
Let's remember that the Hubble was launched in 1990 and it cannot be denied that his work has been more than remarkable. Its useful life is coming to an end, mainly because its capacities are not sufficient for the needs that researchers have today. His replacement will arrive in 2018, with the James Webb Space TelescopeHowever, that one has not yet been launched and all eyes are already on its successor, theWFIRST.
We talked about him a few weeks ago. NASA plans its launch in 2020 and they talk about afield of view 100 times greater than that of Hubble, you only have to see the image above to see what this represents.
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