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Home > Big Questions > What happened in the early universe? About 13.8 billion years ago, the Big Bang gave rise to everything, everywhere, and everywhen—the entire known Universe. What caused the Big Bang? What happened that first moment at the beginning of the Big Bang? When did the first stars form? Our Work. 10 -33 Seconds.
Study how the universe evolved, learn about the fundamental forces , and discover what the cosmos is made of.
While an explosion of a man-made bomb expands through air, the Big Bang did not expand through anything. That's because there was no space to expand through at the beginning of time. Rather, physicists believe the Big Bang created and stretched space itself, expanding the universe.
Aug 12, 2014 · 11 August 2014. How was the Universe created? What created all the planets, stars and galaxies? BBC Future presents a four-minute animated guide to one of the greatest questions we’ve tried to...
Mar 1, 2024 · expanding universe. cosmological model. hot big-bang model. big-bang model, widely held theory of the evolution of the universe. Its essential feature is the emergence of the universe from a state of extremely high temperature and density —the so-called big bang that occurred 13.8 billion years ago.
Mar 25, 2024 · 25 March 2024. How did the Big Bang get its name? Here’s the real story. Astronomer Fred Hoyle supposedly coined the catchy term to ridicule the theory of the Universe’s origins — 75 years on,...
Jan 17, 2017 · The most popular theory of our universe's origin centers on a cosmic cataclysm unmatched in all of history—the big bang. By Michael Greshko and National Geographic Staff....
