How long ago did nothing in the universe exist?

roughly 13.7 billion years ago
It is difficult enough to imagine a time, roughly 13.7 billion years ago, when the entire universe existed as a singularity.

Did the universe start 20 billion years ago?

The new finding suggests that the Milky Way galaxy of stars began forming at least 10 billion and possibly 20 billion years ago after the earlier, explosive birth of the universe.

What was the universe 14 billion years ago?

The Big Bang was the earliest known event in the universe. We can trace the history of our universe back about 14 billion years, to a fiery period known as the Big Bang. At that time, the universe was extremely hot and dense.

Does time have a start?

Time begins when it starts ticking, that is, when physical processes take place in the background of a classical space-time. Anything that happened before has been erased from cosmic memory.

What is the oldest observation we currently have of the universe?

This is the oldest observation we currently have of the universe. From 370,000 years until about 1 billion years. After recombination and decoupling, the universe was transparent but the clouds of hydrogen only collapsed very slowly to form stars and galaxies, so there were no new sources of light.

How far back can we see the early universe?

This can make distant objects very dim (or invisible) at visible wavelengths of light, because that light reaches us as infrared light. Webb will be able to see back to about 100 million – 250 million years after the Big Bang. But why do we need to see infrared light to understand the early universe?

Does the universe have a beginning?

The response to that survey was recently republished in Scientific American ― the most widely read science journal in the world. Two-thirds of the scientists gave the same answer: “Beginning? There was no beginning. Aristotle and Plato taught us 2400 years ago that the universe is eternal.

What happened to the universe after the Dark Ages?

The universe gradually transitioned into the universe we see around us today, and the Dark Ages only fully came to an end at about 1 billion years. The universe as it appears today