From the Catholic priest who pioneered it, to how we can (almost) see it, here are 5 fascinating facts about the Big Bang.
The term"Big Bang" is thrown around casually, to the point of becoming the title of one of the most popular sitcoms ever. But while we all understand the basic idea — that the universe was once small, hot and dense — many people still hold big misconceptions about the theory. Here are five fascinating facts about the theory that defines our cosmos.
Years later, Edwin Hubble discovered that galaxies are, on average, receding away from us. While astronomers continued to debate the implications of that observation, Belgian physicist and Roman Catholic priest Georges Lemaître was the first to take both Einstein's and Hubble's results at face value, arguing that we live in an expanding universe that was once much smaller, hotter and denser than it is today. He dubbed this origin point the"primeval atom.
In 1964, two radio engineers at Bell Labs, Arno Penzias and Robert Wilson, were testing a new microwave receiver. No matter how hard they worked, they couldn't remove a stubborn background hiss that they were constantly hearing in the instrument — they even tried scrubbing all of the pigeon poop off the receivers. Searching around for an explanation, they happened upon a team of theoretical physicists who were gathering funding to build exactly what they had.
What the theory does not tell us, however, is where the universe came from — or even if that question makes sense. Our current understanding of physics can only take us so far into the past before all of our theories, including our knowledge of the workings of space and time, break down. In other words, we don't know how the universe"started." We only know what came after.4. We can see itThe cosmic microwave background is a huge deal.
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