One of the basic wonders of astronomy is the ability to explore deep time alongside deep space. When telescopes capture light from very remote objects, they are also producing a snapshot of a distant, bygone past, which often contradicts what astronomers expect to see in the universe’s infancy.
Case in point: A study published today in Nature describes a galaxy called A1689-zD1, one of the youngest and most remote galaxies ever imaged. The study’s authors, led by astrophysicist Darach Watson of the University of Copenhagen, captured the galaxy as it was when the universe was only about 700...
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