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1 day ago · The chronology of the universe describes the history and future of the universe according to Big Bang cosmology. Research published in 2015 estimates the earliest stages of the universe's existence as taking place 13.8 billion years ago, with an uncertainty of around 21 million years at the 68% confidence level.
May 8, 2024 · From the earliest stages of the hot Big Bang (and even before) to our dark energy-dominated present, how and when did the Universe grow up?
- Ethan Siegel
May 18, 2024 · The universe emerged instantaneously some 13.7 billion years ago in a unique kind of explosion known as the Big Bang. Two features of that creation are mysteries for science. The first is that speed of the explosion, which was an acceleration from nothing and greater than the laws of physics allow. What occurred in the first mini-fraction of ...
1 day ago · It was composed of hydrogen and helium created shortly after the Big Bang 13.8 Ga (billion years ago) and heavier elements ejected by supernovae. About 4.5 Ga , the nebula began a contraction that may have been triggered by the shock wave from a nearby supernova . [25]
May 27, 2024 · JWST observations of the early Universe around 13.3 to 13.4 billion years ago – just a few hundred million years after the Big Bang – have revealed telltale signs of gas reservoirs being actively slurped into three newly forming and growing galaxies.
5 days ago · About 13.8 billion years ago, the entire cosmos consisted of a tiny, hot, dense ball of energy that suddenly exploded. That’s how everything began, according to the standard scientific story of the Big Bang, a theory that first took shape in the 1920s.
May 15, 2024 · Jean-Pierre Luminet. Duration. 00:26:12. 00:00. The Big Bang theory changed how we understand our universe. But who do we have to thank for it?
