Marcia Bartusiak, Author at Astronomy.com https://www.astronomy.com/author/marcia-bartusiak/ Astronomy news, photos, observing events, and space missions. Tue, 26 Nov 2024 17:16:43 +0000 en-US hourly 1 https://wordpress.org/?v=6.5.4 https://www.astronomy.com/uploads/2024/10/cropped-favicon-32x32.jpg Marcia Bartusiak, Author at Astronomy.com https://www.astronomy.com/author/marcia-bartusiak/ 32 32 Is it time to rename the Hubble constant? https://www.astronomy.com/science/renaming-the-hubble-constant/ Tue, 03 Dec 2024 14:00:00 +0000 https://www.astronomy.com/?p=155086// Most people associate the discovery that faraway galaxies are receding from us — and thus, that the universe is expanding — with Edwin Hubble, thanks to his landmark 1929 paper. It was one of the most fundamental discoveries in the history of science. But Hubble did not discover the expansion. In the 1910s, a LowellContinue reading "Is it time to rename the Hubble constant?"

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]]> Exploring the galaxy’s starry satellites https://www.astronomy.com/science/exploring-the-galaxys-starry-satellites/ Fri, 25 Oct 2019 00:00:00 +0000 https://www.astronomy.com/exploring-the-galaxys-starry-satellites/ M5 in Serpens was mistaken for a star and a nebula before being identified by William Herschel in 1791 as a “cluster of stars of almost a globular figure.” It lies about 25,000 light-years away and appears to be a ripe 13 billion years old. Hillary Mathis (REU Program)/NOAO/AURA/NSF The globular clusters surrounding the MilkyContinue reading "Exploring the galaxy’s starry satellites"

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