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The Remains of an Ancient Planet Lie Deep Within Earth (www.caltech.edu)

Cosmic Web Lights Up in the Darkness of Space (www.caltech.edu)

Like rivers feeding oceans, streams of gas nourish galaxies throughout the cosmos. But these streams, which make up a part of the so-called cosmic web, are very faint and hard to see. While astronomers have known about the cosmic web for decades, and even glimpsed the glow of its filaments around bright cosmic objects called...