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Astronomers may have found the first direct hint of Planet Nine

For years, astronomers have wondered whether another huge planet is lurking unseen in the cold darkness beyond Neptune. It sounds silly seeing how astronomers have found thousands of alien planets ...
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Black trees on alien planets: Scientists say worlds with two suns could host forests unlike anything on Earth

For generations, artists and science-fiction writers have imagined alien landscapes beneath twin sunsets. The image became iconic in popular culture long before astronomers confirmed that planets ...