Nebulas are among the most beautiful things in outer space, and thanks to a new project from NASA's Hubble and Chandra instruments, we now have incredible new looks at six of them. While people often associate space with stars, planets, and black holes, nebulas are every bit as important. They're hundreds of millions of kilometers big, can get up to 10,000°C, and astronomers believe there are some 20,000 of them in the Milky Way alone.
As NASA has repeatedly shared throughout the year, these
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