Europe's Herschel space telescope has spied a far-distant galaxy with the aid of a cosmic "zoom lens". The observatory is already one of the most powerful astronomical tools ever built, but its abilities can be boosted thanks to a neat trick of gravity. By viewing a huge cluster of galaxies, Herschel has been able to study in detail an even more distant object. This is possible because the gravity of the foreground cluster magnifies the light of the background galaxy. In a new picture released by the European Space Agency (Esa), this far-off galaxy is seen just a couple of billion years after the Big Bang. "If the cluster were not there, we might not be able to see the galaxy," commented Professor Seb Oliver from the University of Sussex, UK.
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Source: BBC News
Image Credit: H. Raab