Why Some Stars Shine Brighter Than Others | Stellar Magnitude Explained | Star Gazers
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On Oct. 13, 1773, a French astronomer named Charles Messier discovered the "whirlpool galaxy," also known as Messier 51, or M51. Space History Archives👉https://space-com.visitlink.me/7Q1stt Charles Messier was scanning the sky for objects that could confuse comet hunters when he catalogued the galaxy as M51. However, Messier wasn't able to see the spiral structure, and he didn't identify it as a galaxy. Seventy-two years later, another astronomer named William Parsons saw the whirlpool shape, b
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Born in 1863, Delaware astronomer Annie Jump Cannon joined Harvard College Observatory’s “computers” in 1896 under Edward C. Pickering. Working at the objective-prism telescope’s plate stacks, she examined stellar spectra by eye, simplifying earlier schemes into the sequence O, B, A, F, G, K, M. Between 1918 and 1924 she led classification for the Henry Draper Catalogue, which listed 225,300 stars; extensions continued to 1936. Childhood scarlet fever left her largely deaf, so she relied on writ
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Only 102 years ago, astronomer Edwin Hubble discovered that there are other galaxies in the universe #space #astronomy #nasa #science #tiktoklearningcampaign
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In 1977, astronomer Jerry Ehman was analyzing data from the Big Ear Radio Telescope in Ohio when he noticed something extraordinary — a 72-second radio signal unlike anything ever recorded. It came from the direction of the Sagittarius constellation, clear and powerful, at a frequency often linked to hydrogen — the building block of life. Astonished, Ehman circled the reading on the printout and scribbled one word in the margin: “Wow!” That single reaction gave the mysterious signal its now-famo
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Glowing orange Harvest Supermoon set to rise and be visible worldwide
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Meet the ancient Greek astronomer who precisely calculated lunar cycles over 2000 years ago. | The History Archives
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