Redshift

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Behold the limitless, crowded cosmos. The Dark Energy Spectroscopic Instrument (DESI) Legacy Imaging Survey has put out its latest data release, increasing the size of the largest 2D sky map.The survey’s purpose is to improve our understanding of dark energy by mapping how the universe has expanded over the last 12 billion years. (The universe itself is about 13.77 billion years old.) To do that, the survey aggregates data collected by telescopes around the world and runs them through powerful Department of Energy…

In late June, the Webb Space Telescope trained its eye on two of the farthest galaxies seen to date. The galaxies existed several hundred million years after the Big Bang, making them some of the earliest light sources to emerge in the universe.The galaxies are seen on the outskirts of Abell 2744, a giant galaxy cluster (in fact, a hodge-podge of four smaller clusters) in the constellation Sculptor. One of the galaxies existed 450 million years after the Big Bang, the moment that the universe came into being; the other is…

The Webb Space Telescope has taken its biggest image yet, exceeding the scale of the deep field image revealed by President Biden on July 12. The new image covers a region of sky eight times larger than the first Webb deep field, and it includes some dazzling structures from the cosmos.The image—made up of a mosaic of 690 individual frames—was taken as part of the Cosmic Evolution Early Release Science Survey (CEERS). The images were taken in June, and Webb is scheduled to take another six (the last in a set of 10) in…