Ruth Durrer

Jul 25, 2023 | quantamagazine.org | Lyndie Chiou |Ruth Durrer

By measuring the universe’s emptiest spaces, scientists can study how matter clumps together and how fast it flies apart. IntroductionLike a bright city in the middle of a barren desert, our galactic neighborhood is enveloped by a cosmic void — an enormous, almost unfathomably empty pocket of space. Recently, sky surveys have spotted thousands more of these vacant bubbles.