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Inside the target chamber at the University of Rochester’s Omega Facility, lasers compress iron-silicon samples to the ultrahigh pressures found in the cores of super-Earths. Photo courtesy of Laboratory for Laser Energetics

Ultrahigh-pressure laser experiments enlightens cores of super-Earth exoplanets

Researchers have identified more than 2,000 of these "super-Earths," exoplanets that are bigger than Earth, however, smaller than Neptune. By examining how iron and...