Space nebulae take on many different appearances, but this 'Flame Nebula,' spotted by NASA's Hubble telescope may be one of the most captivating. Although Hubble has nothing more to prove these days, the prowess of the telescope continues to impress 31 years after its launch. Between helping us better understand the universe to capturing some of the most beautiful space photographs in existence, the impact Hubble's had on space exploration can't be overstated.
One type of entity Hubble's
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