Brian Cox:

"Big Bang" is commonly used in astronomy, most people have limited knowledge about the details of this phenomenon, unless you're someone who has dedicated time to watching informative visualizations or have a particular interest in the subject. To put it simply, the phenomenon known as the Big Bang was more than just an explosion. It originated from a single point that was incredibly hot and dense. This point expanded to extreme lengths. All of this happened when the universe was very young. Surprisingly, at the time of the Big Bang, the universe was only 10 to the power of minus 34 seconds old, which is an extremely small fraction. During the Big Bang, the universe went through a rapid expansion, often referred to as an explosion or inflation. The space expanded at a speed faster than light. The growth was so rapid that you wouldn't have even noticed as the universe increased in size 90 times almost instantly, going from subatomic-sized to the size of a golf ball within one second. After the inflation, the universe started to cool down, leading to the formation of the matter we know today. Within a second, our universe was filled with all the particles we've learned about in chemistry class: protons, neutrons, electrons, anti-electrons, photons, and neutrinos. These particles are the legacy of the Big Bang.

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#Voyager #Space