"..The main job of #ESA's #Gaia space telescope is to map our own galaxy in exquisite detail - but while doing so, is can also map the whole universe!
Using Gaia, we can map the distribution quasars - brightly shining centers of galaxies hosting supermassive black holes - across the universe, all the way back to just 1.5 billion years after the big bang or 12.3 billion years ago .."
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