### What size was the universe in the past?

## What size was the universe in the past?

But if we’re talking about the observable Universe, and we know we’re only able to access somewhere between the last 10-30 and 10-35 seconds of inflation before the Big Bang happens, then we know the observable Universe is between 17 centimeters (for the 10-35 second version) and 168 meters (for the 10-30 second …

**What is the size of the universe?**

about 93 billion light-years

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).

### Where does space end?

Scientists now consider it unlikely the universe has an end – a region where the galaxies stop or where there would be a barrier of some kind marking the end of space. But nobody knows for sure.

**What is the smallest thing on Earth?**

Quarks are the smallest particles we have come across in our scientific endeavor. The Discovery of quarks meant that protons and neutrons weren’t fundamental anymore.

#### Is infinitely small equal to zero?

The generally accepted mathematical answer is that, if you are using the Real Number Systems (aka “Reals”), there is no difference between 0 and “infinitely small”. We say the limit of x, as x approaches 0, is equal to zero.

**What is the actual size of universe?**

Measuring about 91 billion light years in diameter and being 13.8 billion years old, the Universe encompasses all matter, energy, time and space in existence.

## How do scientist know the size of the universe?

Scientists measure the size of the universe in a myriad of different ways. They can measure the waves from the early universe, known as baryonic acoustic oscillations, that fill the cosmic microwave background. They can also use standard candles, such as type 1A supernovae, to measure distances.

**How large is the entire, unobservable universe?**

This means the unobservable Universe, assuming there’s no topological weirdness, 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.

### Is the universe large or small?

The universe is a big, big place .

What size was the universe in the past? But if we’re talking about the observable Universe, and we know we’re only able to access somewhere between the last 10-30 and 10-35 seconds of inflation before the Big Bang happens, then we know the observable Universe is between 17 centimeters (for the 10-35 second version) and…