A visualization of the polarization of the Cosmic Microwave Background, or CMB, as detected by ESA's Planck satellite over the entire sky. ESA and the Planck Collaboration hide caption

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Some physicists are pushing back against ideas like string theory and the multiverse. Here, we see a computer-generated image of a black hole, which might, ultimately, be explained by ideas like string theory. Alain Riazuelo/IAP/UPMC/CNRS hide caption

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The sun rises behind the cosmic microwave background (CMB) radiation telescopes at the National Science Foundation'€™s South Pole Station. Steffen Richter/Harvard University hide caption

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The Dark Sector Lab (DSL), located 3/4 of a mile from the Geographic South Pole, houses the BICEP2 telescope (left) and the South Pole Telescope (right). Steffen Richter/Harvard University hide caption

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Observing the multitude of galaxies in our own universe is a piece of cake. Observing the multiverse, if such a thing exists, seems impossible. Above, the Milky Way rises above the ESO's ALMA observatory in Chile. Y.Beletsky/ESO hide caption

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This image released Monday by Harvard-led researchers represents the gravitational waves in the Cosmic Microwave Background in the microsecond after the Big Bang. Harvard-Smithsonian Center for Astrophysics hide caption

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Part of the ALMA array on the Chajnantor plateau of Chile points skyward to the Milky Way, our own galaxy. The center of our galaxy is visible as a yellowish bulge crossed by dark lanes, which are themselves huge clouds of interstellar dust. José Francisco Salgado/ESO hide caption

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The Milky Way dominates the sky over Chile's Atacama Desert, home to the European Southern Observatory. John Colosimo/ESO hide caption

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How To Fall Forever Into The Night Sky
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