How old is the milky way
- how old is our universe today
- how old is the universe today
- how big is the universe today
- how old is our current universe
How do they know the universe is 13.7 billion years old?
How old is the universe in light years...
New Evidence Suggests the Universe Is Twice as Old as We Thought
- For at least two decades, astronomers have mostly agreed that the universe is around 13.7 billion years old.
- But the ages of super-old stars and the masses of early galaxies provide compelling evidence that the estimate could be off.
- A new study from the University of Ottawa uses a theory of “tired” light and coupling constants to calculate a new age of the universe—26.7 billion years.
It’s hard to even fathom the immensity of 13.7 billion years.
If the entire history of the universe were stretched out into a cosmic calendar—with the Big Bang being the greatest New Years’ fireworks display to ever exist—then the Earth doesn’t even join the party until mid-September.
Oh, and the entirety of recorded human history only happens in the last 10 seconds on December 31.
Related Story
Scientists calculate the age of the universe by observing light emanating from stars born only a couple hundred million years after the Big Bang.
Because the universe is also expanding, it stretches that primeval light, which s
- how old is the universe currently
- how old is the universe in milliseconds today