Roughly 95% of the universe is made of something we cannot see, touch, or directly detect with any instrument ever built. We only know it’s there because of what it does to the things we can see — the way galaxies spin, the way light bends around clusters, the way the cosmos itself is stretching…
In May 1964, two radio astronomers at Bell Telephone Laboratories in Holmdel, New Jersey, kept finding a faint hiss in their antenna that refused to go away. It came from every direction, at every hour, in every season, and no amount of cleaning the equipment made it disappear. That stubborn noise turned out to be…
In 1929, one astronomer looking through a telescope on a mountain outside Los Angeles changed what the universe was. Not what it looked like, or how big it seemed — what it fundamentally is. Before Edwin Hubble, most astronomers believed the Milky Way was the entire universe: a single island of stars floating in otherwise…
