Space. It's really, really big. How big is it? Well, according to astronomers, the observable universe is around 92 billion light-years in diameter, but that's all we can see (hence the word ...
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Giant cosmic 'sandwich' is the largest planet-forming disk ever seen — Space photo of the week
The Hubble Space Telescope has captured a spectacular new image of the largest and most unusual protoplanetary disk ever ...
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