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- How it all started. The Big Bang was not an explosion in space, as the theory's name might suggest. Instead, it was the appearance of space everywhere in the universe, researchers have said.
- The universe's first growth spurt. When the universe was very young — something like a hundredth of a billionth of a trillionth of a trillionth of a second (whew!)
- Too hot to shine. Light chemical elements were created within the first three minutes of the universe's formation. As the universe expanded, temperatures cooled and protons and neutrons collided to make deuterium, which is an isotope of hydrogen.
- Let there be light. About 380,000 years after the Big Bang, matter cooled enough for electrons to combine with nuclei to form neutral atoms. This phase is known as "recombination," and the absorption of free electrons caused the universe to become transparent.
Mar 7, 2022 · Considered the world's first-known astronomers, the ancient Babylonians were avid stargazers. Some 6,000 years ago, they erected watch towers to scan the night sky, mapped the stars and visible ...
Release. May 29, 2007. ( 2007-05-29) –. May 23, 2015. ( 2015-05-23) [1] The Universe is an American documentary television series that features computer-generated imagery and computer graphics of astronomical objects in the universe plus interviews with experts who study in the fields of cosmology, astronomy, and astrophysics.
Oct 18, 2023 · Astronomy had interested many ancient thinkers, but two views of the universe dominated and endured right through the Middle Ages. These were the models proposed by Aristotle (384-322 BCE) and Ptolemy (c. 100 to c. 170). Aristotle's model had the planets move in a uniform way through an undefined medium of invisible spheres, always at fixed ...
Sep 15, 2021 · In the early developments of astronomy, observation of stars and planets led to the understanding of the change in seasons had clear patterns that could be predicted. This not only helped develop agriculture, but other impacts include integrating astronomical observations with religious calendars.
Sep 30, 2021 · To better understand what the Webb telescope will study, it’s helpful to know what happened in the early universe, before the first stars formed. The universe, time, and space all began about 13.8 billion years ago with the Big Bang. For the first few hundred-thousand years, the universe was a hot, dense flood of protons, electrons, and ...
Jan 14, 2021 · Solar System Timeline. A condensed timeline of the events that shaped our solar system. The Sun Shines. The Big Bang brought the Universe into existence 13.8 billion years ago. Our solar system formed much later, about 4.6 billion years ago.
