Tag: universe
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Where Normal Matter Really Lives in the Universe: The Cosmic Baryon Census
Beyond the Bright Objects: The Hidden Home of Normal Matter When we gaze at the night sky, we see stars, planets, and distant galaxies. But normal matter—the stuff that makes up stars, planets, people, and everything we know—accounts for only a small fraction of the universe’s total mass-energy. The bulk of ordinary matter is not…
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SPHEREx Completes Its First All-Sky Map: A New Era for Cosmic Discovery
NASA’s SPHEREx: A Milestone in Cosmic Cartography In a bold leap for space science, NASA’s SPHEREx telescope has completed its first map of the entire sky, captured from Earth’s vantage point. This achievement marks not just a technical triumph but a promising gateway to new discoveries about the universe’s origin, structure, and evolution. Since its…
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Best Observation of Black Hole Mergers Achieved
Introduction to Black Hole Mergers The merging of two black holes is one of the most extraordinary phenomena in the universe. This cataclysmic event not only displays the wildest configurations of space and time but also challenges our understanding of gravity. Recently, researchers have made significant strides in observing such events, providing deeper insights into…