Astronomers spot the first “bounce” in our Universe
<p>If you were to look at the Universe on the absolute largest of cosmic scales, you’d find that galaxies clustered together in an enormous web of structure. Individual galaxies form along the threads of the web, with rich groups and clusters of galaxies forming at the nexuses where the threads meet. In between those threads are giant void regions, with far fewer galaxies than average, and some voids that are so deep they seem to harbor no galaxies at all. This web, to the best of our knowledge, is dominated by dark matter’s gravitational effects, but it’s only the normal matter — made of protons, neutrons, and electrons — that winds up forming the stars, gas, and dust that we can observe.</p>
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