The universe is (nearly) 14 billion years old, astronomers confirm. With looming discrepancies about the true age of universe,
scientists have taken a fresh look at the observable (expanding) universe and have estimated that it is 13.77 billion years old
(plus or minus 40 million years). In 2019, scientists studying the movement of galaxies concluded that the universe is hundreds of
millions of years younger than previously estimated by the Planck Collaboration, a group of scientists who have worked
with the European Space Agency’s
Planck mission. Using data from the Planck
space observatory, they found the universe to be approximately 13.8 billion years old.
With ACT, they calculated a Hubble constant of 42 miles per second per megaparsec, or 67.6 kilometers per second per megaparsec.
In other(simpler) words, they found that an object 1 megaparsec (or about 3.26 million light-years) away from Earth would be moving
away from Earth at 42 miles per second (67.6 km/s).By determining the age of the universe, the researchers also were able to
estimate how fast the universe is expanding — this figure is known as the Hubble constant.
With ACT, they calculated a Hubble constant of 42 miles per second per megaparsec, or 67.6 kilometers per
second per megaparsec. In other (simpler) words, they found that an object 1 megaparsec (or about 3.26 million light-years)
away from Earth would be moving away from Earth at42 miles per second (67.6 km/s). This is extremely close to the 41.88 miles
per second per megaparsec (67.4 km per second per megaparsec) previously estimated by the Planck team.
However, previous measurements of the motion of galaxies have shown that the universe is expanding faster
than this, according to the same statement.
