## How large is the unobservable universe?

23 trillion light years
The unobservable Universe, on the other hand, must be at least 23 trillion light years in diameter, and contain a volume of space that’s over 15 million times as large as the volume we can observe. The simulated large-scale structure of the Universe shows intricate patterns of clustering that…

### How big is the theoretical universe?

The proper distance—the distance as would be measured at a specific time, including the present—between Earth and the edge of the observable universe is 46 billion light-years (14 billion parsecs), making the diameter of the observable universe about 93 billion light-years (28 billion parsecs).

#### How big is the expanding universe?

Over a century since Hubble’s first estimate for the rate of cosmic expansion, that number has been revised downwards time and time again. Today’s estimates put it at somewhere between 67 and 74km/s/Mpc (42-46 miles/s/Mpc).

How much percent of the universe is observable?

five percent
Only five percent of the universe is visible. What is the rest made up of? The visible universe—including Earth, the sun, other stars, and galaxies—is made of protons, neutrons, and electrons bundled together into atoms.

What is beyond the end of the universe?

But “infinity” means that, beyond the observable universe, you won’t just find more planets and stars and other forms of material…you will eventually find every possible thing.

## Does the Universe end?

The end result is unknown; a simple estimation would have all the matter and space-time in the universe collapse into a dimensionless singularity back into how the universe started with the Big Bang, but at these scales unknown quantum effects need to be considered (see Quantum gravity).

### How fast is space expanding?

This means that for every megaparsec — 3.3 million light years, or 3 billion trillion kilometers — from Earth, the universe is expanding an extra 73.3 ±2.5 kilometers per second. The average from the three other techniques is 73.5 ±1.4 km/sec/Mpc.

#### What percentage of space is empty?

99.9999999%
But it might humble you to know that all of those things — your friends, your office, your really big car, you yourself, and everything in this incredible, vast universe — are almost entirely, 99.9999999%, empty space.

What is beyond the observable universe?

Beyond our observable Universe lies the unobservable Universe, which ought to look just like the part we can see. The way we know that is through observations of the cosmic microwave background and the large-scale structure of the Universe.

What is the current size of the universe?

The Universe includes planets, stars, galaxies, the contents of intergalactic space, the smallest subatomic particles, and all matter and energy. The observable universe is about 28 billion parsecs (91 billion light-years) in diameter at the present time.

## What is the mass of the observable universe?

Now, the size of the observable universe is about 14 billion light years, and using the above value of density gives you a mass (dark and luminous matter) of about 3 x 10^55 g, which is roughly 25 billion galaxies the mass of the Milky Way.

### What is the length of the universe?

Modern science says that the known universe extends about 10 billion light years in all directions, and consists of 200 billion galaxies. This means it can take light approximately 20 billion years to cross from one side of the universe to the other.