Sometimes astronomers and astrophysicists are working at such gigantic, mind-bending scales – in terms of both distance and time – that you can't help but be awestruck at the new discoveries they keep coming out with.
galaxy – known as a starburst galaxy because of the unusually high number of new stars that it's producing.Light is taking so long to reach us from HFLS3 that we're seeing it as it was less than a billion years after the Universe came into existence.
"Besides proof of cooling, this discovery also shows us that the Universe in its infancy had some quite specific physical characteristics that no longer exist today,""Quite early, about 1.5 billion years after the Big Bang, the cosmic microwave background was already too cold for this effect to be observable. We have therefore a unique observing window that opens up to a very young Universe only.
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