After 13.8 billion years of expansion, the comoving distance (radius) has increased to around 46.6 billion light years.
- 1 How far from Earth did the Big Bang happen?
- 2 How far back is the Big Bang?
- 3 How big was the universe when the Big Bang happened?
- 4 What was the universe like 300 000 years after the Big Bang?
- 5 How far out does space go?
- 6 How far back in time can we see?
- 7 Will the universe end?
- 8 Will the universe stop expanding?
- 9 What could have gone wrong in the first few seconds of the universe?
How far from Earth did the Big Bang happen?
The answer appears to be self-evident: 13.8 billion light-years, because a light-year is the distance that light can travel in a year, and nothing can travel faster than light at that speed.
How far back is the Big Bang?
A single “explosion,” or inflation event, according to the Big Bang Theory, occurred at the beginning of the Universe, from which all matter, energy, and space-time took shape. In accordance with the most recent estimations, this inception moment happened around 13.8 billion years ago.
How big was the universe when the Big Bang happened?
A limit is set on how far you can stretch the hot Big Bang backwards: to a time interval spanning 10 to 35 seconds and a distance scale of 1.5 meters, at the very most At its early phases, the Universe could have been no smaller than the approximate size of a human being, according to our current understanding of its “size.”
What was the universe like 300 000 years after the Big Bang?
The cosmos was a very dark place for a few hundred million years or so after the Big Bang, when the universe began to expand. There were no stars in the sky, and there were no galaxies in the sky. As soon as the Big Bang occurred, the cosmos was a boiling pot of particles (i.e. protons, neutrons, and electrons).
How far out does space go?
It reaches a height of around 20 miles (32 kilometers) above the surface of the planet. Molecules are tiny particles of air so minuscule that you inhale billions of them every time you take a breath. They float around in the atmosphere, mixing with one another. Space is located above the atmosphere. It is so named because it has much fewer molecules, with a large amount of free space between them, than water.
How far back in time can we see?
We discussed before that the greatest distance we may observe in a non-expanding universe is twice the age of the Universe in light years: 27.6 billion light years.
Will the universe end?
There are several possible outcomes for the universe’s eventual demise, but the specifics will depend on how the pace of cosmic expansion changes in the future. A Big Crunch will occur if gravity overpowers expansion, which will cause the cosmos to collaps. If the universe continues to expand at its current rate eternally, as predicted, we will experience a Big Freeze.
Will the universe stop expanding?
The density of the cosmos determines the course of the universe. Currently, the bulk of evidence is in favor of a universe that will continue to expand endlessly based on measurements of the rate of expansion and the mass density, culminating in the “Big Freeze” scenario depicted in the diagram below.
What could have gone wrong in the first few seconds of the universe?
Who knows what may have gone wrong in the initial few seconds of the Universe’s existence. Even if gravity had been a stronger force, everything would have come crashing down around us. Stars would never have formed if the Earth had been weaker.