Sound Waves from the Beginning of Time

PBS_SpaceTime Published May 21, 2019 0 Plays

Rumble / Weird ScienceInvisible to the naked eye, our night sky is scattered with the 100s of billions of galaxies the fill the known universe. Like the stars, these galaxies form constellations – hidden patterns that echo the reverberations of matter and light in an epoch long before galaxies ever formed. These are the baryon acoustic oscillations, and they may hold the key to understanding the nature of dark energy.

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