Editor’s note

Until the 1920s, most people believed the Milky Way was the only galaxy in the universe. But then, on December 30, 1924, a US astronomer named Edwin Hubble announced a dramatic discovery. Looking through a 100-inch telescope, he saw bright lights that he concluded were not distant stars or gas clouds, as many people thought, but a separate galaxy. His finding was called “junk science” at first—but within 10 years, it was widely accepted among scientists that the Milky Way is one galaxy among millions. Hubble never won a Nobel Prize for his work because astronomers were not eligible at that time. (That has since changed.) In 1990, however, the Hubble Space Telescope was named after him (p4). This year NASA is celebrating the 35th anniversary of the telescope’s launch…

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The Week Junior US (Digital) - 1 Issue, Issue 256

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