Hubble constant – Quanta Magazine https://www.quantamagazine.org Illuminating science Mon, 16 Sep 2024 14:10:47 -0400 en-US hourly 1 https://wordpress.org/?v=6.2 The Webb Telescope Further Deepens the Biggest Controversy in Cosmology https://www.quantamagazine.org/the-webb-telescope-further-deepens-the-biggest-controversy-in-cosmology-20240813/ https://www.quantamagazine.org/the-webb-telescope-further-deepens-the-biggest-controversy-in-cosmology-20240813/#respond Tue, 13 Aug 2024 11:17:15 +0000 https://www.quantamagazine.org/?p=139758 The post The Webb Telescope Further Deepens the Biggest Controversy in Cosmology first appeared on Quanta Magazine

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Nearly a century ago, Edwin Hubble discovered that the universe is getting larger. Modern measurements of how fast it is expanding disagree, however, suggesting that our understanding of the laws of physics might be off. Everyone expected the sharp vision of the James Webb Space Telescope to bring the answer into focus. But a long-awaited analysis of the telescope’s observations released late...

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Clashing Cosmic Numbers Challenge Our Best Theory of the Universe https://www.quantamagazine.org/clashing-cosmic-numbers-challenge-our-best-theory-of-the-universe-20240119/ https://www.quantamagazine.org/clashing-cosmic-numbers-challenge-our-best-theory-of-the-universe-20240119/#respond Fri, 19 Jan 2024 15:44:49 +0000 https://www.quantamagazine.org/?p=134189 The post Clashing Cosmic Numbers Challenge Our Best Theory of the Universe first appeared on Quanta Magazine

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In the early 2000s, it seemed that cosmologists had solved the largest and most complex puzzle of all: how the universe works. “There was this amazing moment when all of a sudden, all the pieces in cosmology snapped together,” said J. Colin Hill, a theoretical cosmologist at Columbia University. All the ways of studying the universe — mapping galaxies and their larger structures...

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How (Nearly) Nothing Might Solve Cosmology’s Biggest Questions https://www.quantamagazine.org/how-nearly-nothing-might-solve-cosmologys-biggest-questions-20230725/ https://www.quantamagazine.org/how-nearly-nothing-might-solve-cosmologys-biggest-questions-20230725/#respond Tue, 25 Jul 2023 14:09:53 +0000 https://www.quantamagazine.org/?p=128234 The post How (Nearly) Nothing Might Solve Cosmology’s Biggest Questions first appeared on Quanta Magazine

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Like a bright city in the middle of a barren desert, our galactic neighborhood is enveloped by a cosmic void — an enormous, almost unfathomably empty pocket of space. Recently, sky surveys have spotted thousands more of these vacant bubbles. Now, researchers have found a way to pull information out of these cosmic voids: By counting how many of them exist in a volume of space...

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The Webb Space Telescope Will Rewrite Cosmic History. If It Works. https://www.quantamagazine.org/why-nasas-james-webb-space-telescope-matters-so-much-20211203/ https://www.quantamagazine.org/why-nasas-james-webb-space-telescope-matters-so-much-20211203/#respond Fri, 03 Dec 2021 15:55:37 +0000 https://www.quantamagazine.org/?p=110667 The post The Webb Space Telescope Will Rewrite Cosmic History. If It Works. first appeared on Quanta Magazine

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Editor’s note: This article package was awarded the 2022 Pulitzer Prize in Explanatory Reporting. To look back in time at the cosmos’s infancy and witness the first stars flicker on, you must first grind a mirror as big as a house. Its surface must be so smooth that, if the mirror were the scale of a continent, it would feature no hill or valley greater than ankle height. Only a mirror so huge and...

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Astronomers Get Their Wish, and a Cosmic Crisis Gets Worse https://www.quantamagazine.org/astronomers-get-their-wish-and-the-hubble-crisis-gets-worse-20201217/ https://www.quantamagazine.org/astronomers-get-their-wish-and-the-hubble-crisis-gets-worse-20201217/#respond Thu, 17 Dec 2020 13:50:00 +0000 https://www.quantamagazine.org/?p=97591 The post Astronomers Get Their Wish, and a Cosmic Crisis Gets Worse first appeared on Quanta Magazine

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On December 3, humanity suddenly had information at its fingertips that people have wanted for, well, forever: the precise distances to the stars. “You type in the name of a star or its position, and in less than a second you will have the answer,” Barry Madore, a cosmologist at the University of Chicago and Carnegie Observatories, said on a Zoom call last week. “I mean …” He trailed off.

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