
How old is the universe? - NASA
Jul 21, 2023 · We do not know the exact age of the universe, but we believe that it is around 13 billion years - give or take a few billion. Astronomers estimate the age of the universe in two …
How Old is the Universe? | How They Know, Age & History
Sep 29, 2020 · One of the most debated topics in astronomy is how old the Universe is. Click to read our comprehensive post on the age of the Universe.
How old is the universe? - New Scientist
Scientists’ best estimate is that the universe is about 13.8 billion years old. But, like so many of the largest-scale properties of the universe, we are not entirely sure about its age. There ...
The Universe | Facts, Information, History & Definition
Aug 19, 2020 · The word universe comes from the Latin word “universus” that later became “universum”, and the old French word “univers” – which in a sense, means whole. One of the …
How Big is the Universe? | Size, Why So Big, Infinite & Facts
Sep 29, 2020 · The Universe is so big because it is constantly expanding, and it does so at a speed that even exceeds the speed of light. Click for more.
How Old is the Earth? | Age, Discovery, Life On Earth & Facts
Sep 29, 2020 · The planets formed several millions of years after the Solar System. But how old is the Earth? Click for even more facs and information.
When did time begin? Hint: It wasn’t at the big bang
Feb 18, 2025 · Our universe is expanding, so it must have been smaller in the past. Indeed, if we rewind our cosmological movie, we see the universe shrinking back almost to a point – the big …
Astronomers have spotted the largest known object in the universe
Feb 7, 2025 · Astronomers have found the largest known structure in the universe. It is 1.4 billion light years across and contains nearly 70 galactic superclusters. It is also hundreds of …
Are there multiple universes? - New Scientist
Are there multiple universes? What – one vast, ancient and mysterious universe isn’t enough for you? Well, as it happens, there are others. Among physicists, it’s not controversial.
StarChild: The Universe - NASA
The universe is a huge wide-open space that holds everything from the smallest particle to the biggest galaxy. No one knows just how big the Universe is. Astronomers try to measure it all …