How old is the universe?

Observations of unprecedented resolution now provide greater accuracy over the age of the universe. According to astronomers, it is 13.77 billion years old, within 40 million years.

determine theAge of universe, It is not easy. Astronomers Been working there for a long time. Today, everyone wants to agree with the new comments. Of Cornell University Researcher (United States) giveUniverse 13.77 billion years, to the nearest 40 million years.

To arrive at this estimate, astronomers relied on the data Cosmological difference background Collected by Binoculars Cosmological analysis of Atacama (ACT, Chile) between 2013 and 2016. And they connect to the values ​​it provides Standard model of cosmology And measurements made on the same diffused background by the Space Observatory Planck European Space Agency (That) Between 2009 and 2013.

Towards a revolution for cosmology?

Remember that in 2019, A. Search team, Is based on the measurement of The movements Of Galaxies, Had estimated that the universe should be millions of years younger. He argued that Hubble Continuous – Measures Speed The expansion of our Universe – was equal to 74 kilometers per second per megacopers. 67.4 or 67.6 km / s / MCP given by Planck or by Cornell University researchers.

This difference between measurements calls into question the accuracy of various measurements. But on the fact that independent measurements were made for the first time Cosmological difference backgroundGive the same result, while more local measurements always lead to a younger lifespan, an indication that we may be atDawn With a search that will change us Understanding how the universe works.

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Age of the universe: 13 to 14 billion years

Hubble’s new observations confirm a universe between 13 and 14 billion years old. By AuscultatingCircular cluster M4 at 7000 Light years Of Soleil In Constellation scorpio, Astronomers have detected Stars The oldest in the universe, White dwarfs Of Quantity 30 whose temperature and age have been determined. These stars are 12 to 13 billion years old. The model of the life cycle of stars argues that these are early Stars Were made after 1 billion years big Bang. Suddenly, the universe will be 13 to 14 billion years old.

Article by Remy décourt Published on 04/28/2002

pay attention :

According to our knowledge, since the Big Bang, the universe has not stopped growing, but rather with a constant speed of expansion. Today the universe continues to move forward, but there is a mysterious Energy Darkness (repulsive force) accelerates this expansion.

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