If we want to know how old the universe is, then we need to detect light that was emitted by the farthest object we can see. The age of the universe is estimated to be either 12.5 or 13.8 billion years old, though most scientists agree on 13.8.
NEIL DEGRASSE TYSON & JAMES TREFIL
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Neil DeGrasse Tyson and James Trefil tries to answer the oldest questions about the universe we live in along with the origins of life and our future.
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The Universe We Live In
- The Universe is seemingly infinite, both in terms of space and time.
- Some estimates put the size of the Universe as 92 billion light-years in diameter.
- The age of the Universe is calculated at 13.8 billion years.
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Earliest Evidence of Plate Tectonics
The earliest evidence of the tectonic plates was found in Greenland which was estimated to be abbout 3.8 billion years old. Covnersely, researchers have found that the tectonic plates have been active for as long as 4 billion years ago.
There have been two supercontinents: The Rodinia whi...
The early universe
The JWST will be ale to look back around 200 million years after the big bang, when the first stars in the Universe formed.
The first stars are thought to have been massive giants made of hydrogen and helium, whose short lives ended in the supernovae that created the heavier elements we det...
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