About 80 percent of the universe’s mass is thought to consist of dark matter. And yet, little is known about the composition and structure of the particles that make up dark matter, presenting physicists with some fundamental questions.

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TRAPPIST-1 e, an Earth-sized exoplanet 40 light years away, may have an atmosphere that could support having liquid water on the planet’s surface in the form of a global ocean or icy surface, according to new research by an international collaboration including Cornell astronomers.

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