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Read More: Conspiracy Theorists Think Planet X Will Kill Us All Soon—here's Why They're Wrong Whether it exists or not, astronomers will keep on searching for Planet 9 in diverse and creative ways.

If a smaller, cooler planet is out there, it’s probably in the outer third of its orbit, which puts it against a dense background of Milky Way stars, a planetary needle in a galactic haystack.

Linux now joins Android on Planet's little Cosmo Communicator computer-phone Owners of the Cosmo Communicator are no longer restricted to Android on the mobile with a slide-out keyboard.