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Pluto in True Color
What color is Pluto, really? It took some effort to figure out.
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Astronomy Picture of the Day: Methane Bubbles Frozen in Lake Baikal
What are these bubbles frozen into Lake Baikal? Methane. Lake Baikal, a UNESCO World Heritage Site in Russia, is the world's largest (by volume), oldest, and deepest lake, containing over 20% of the world's fresh water.
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