The universe, quite simply, must at least be as old as the oldest thing we can find in it. A European team came up with a Hubble constant …

But when the universe was in its infancy, it contained no stars at all. The Astrophysical Journal (2019). That’s four and a half billion. How do we know how old it is? The maximum possible ages given are always much less than the required evolutionary ages, while the biblical age (6,000 years) always fits comfortably within the maximum possible ages. With each moment that goes by, a number of subtle but important changes occur, even if many … How Big is the Universe? Scientists around the globe have been keenly trying to find the origin of the universe, how it was formed, the birth of new stars, and more.
The newest galaxy we know of formed only about 500 million years ago. Our sun is 4,500,000,000 years old.

And an international team of scientists is closer than ever to detecting, measuring and studying a signal from this era that has been traveling through the cosmos ever since that starless era ended some 13 billion years ago. Jee and her team have entered a debate about the universe's age that has been going on for years. Moon rocks work well for this. That's a lot of zeroes. In an effort to further refine the age of Earth, scientists began to look outward. Astronomers studying the intricacies of … ... while the universe itself has been dated to 13.8 billion years. Before this dark age, the universe was hot and dense. By David J. Eicher | Published: Monday, July 1, 2019

Thus, a direct test of the age of the universe is to go hunting for ancient stars. The Universe Clock is part of a mapping project whereby we learn about the early universe by applying base-2 to the Planck base units (time, length, mass, charge) and go to the age and size of the universe within 202 doublings (notations, steps, or sets). Electrons and photons regularly snared one another, making the universe opaque. When the universe was just 1 billion years old, hydrogen atoms began to aggregate and form the first stars, bringing an end to the dark age. The Universe is not the same today as it was yesterday. How do we know the Sun's age? The universe is about 13.8 billion years old, and its stars are arguably its most momentous handiwork.

Our universe is about 13.8 billion years old, so most galaxies formed when the universe was quite young! Astronomers believe that our own Milky Way galaxy is approximately 13.6 billion years old. Most galaxies are between 10 billion and 13.6 billion years old. To get this number, we look for the oldest things we can find.

Today, stars fill the night sky. We look at the age of the whole solar system, because it all came together around the same time.
Two great debates have taken center stage in the search to answer this age-old question.