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Observable Universe facts

While investigating facts about Observable Universe Vs Entire Universe and Observable Universe Size, I found out little known, but curios details like:

NASA calculated that you only need 40 digits of Pi to calculate the circumference of the observable universe, to the accuracy of 1 hydrogen atom

how observable universe is calculated?

A University of Clemson student conducted an experiment in identifying ways to help turtles successfully cross roads. He placed a fake turtle in a road to observe driver behavior and disturbingly found that six percent of people deliberately went out of their way to hit the turtle.

What is the observable universe?

In my opinion, it is useful to put together a list of the most interesting details from trusted sources that I've come across answering observable matter makes up about what percentage of the universe. Here are 50 of the best facts about Observable Universe Map and Observable Universe Scale I managed to collect.

what is beyond the observable universe?

  1. A sound 1100 decibels loud would create a black hole larger than the Observable Universe.

  2. According to the Inflation theory, our unobservable universe may be 10,000,000,000,000,000,000,000,000,000,000 times larger than the already mind-bogglingly massive observable universe.

  3. The JWST telescope is launching in 2018, is 100X more powerful than Hubble, and will be able to see the edge of the observable universe.

  4. Taking pi to 39 digits allows us to measure the circumference of the observable universe to within the width of a single hydrogen atom.

  5. The Milky Way Galaxy is located in the largest empty void in the observable universe.

  6. Mathematically there are more possible games of chess than there are atoms in the Observable Universe.

  7. A common homeopathic cure for the flu is a 200C dilution of duck liver. A dilution of one molecule in the observable universe is 40C, therefore one would need to consume the equivalent of 10^320 observable universes of the substance to get a single molecule of duck liver.

  8. There is a supermassive void in space called the Boötes void and if the Milky Way had been in the center of the void, we wouldn't have known there were other galaxies until the 1960s. The void is 0.27% the width of the entire observable universe.

  9. A 512-bit CPU would be capable of addressing more bytes than there are fundamental particles in the observable universe.

observable universe facts
What is outside the observable universe?

Why does the observable universe have an edge quizlet?

You can easily fact check why can't we see beyond the observable universe by examining the linked well-known sources.

Our galaxy plus a few more are trapped in this thing called the local group that only makes up 0.00000000001 percent of the observable universe and because of the nature of the expanding universe, we'll never be able to leave the local group. Even with light speed travel.

There are over 2 trillion galaxies in the observable universe and that up until 1924, the common knowledge was that the milky way was itself the whole universe - source

Using the most lowballed version of Drake's Equation there are between 200 - 400 billion civilizations in the Observable Universe at any given time. - source

About Graham's number. This is a finite number so large that you couldn't write it out even if the numbers you used were subatomic in size and you used the whole observable universe as a canvas. But we know it ends in a seven.

All things observable--the stars, planets and galaxies that can be seen today--make up just 4% of the universe. The other 96% is made of stuff astronomers can't see, detect or even comprehend. - source

When was the observable universe discovered?

The largest galaxy in the observable universe is elliptical galaxy, IC 1101. It has 100 trillion stars and is 6 million light years across! By comparison, the Milky way has a mere 100 billion stars and is 120,000 light years across.

How observable universe work?

That, although there are more stars in the universe than the grains of sand on Earth, there are more atoms in your body than all the stars in the observable universe.

If we had a spacecraft that could "simply" accelerate at a constant 1g (the acceleration rate of free-falling objects due to gravity), then the passengers would be able to travel through the entire KNOWN universe, not merely the observable universe, in just one lifetime.

The calculator number limit of 10^99 is actually pretty large. There are only 10^80 atoms in the observable universe.

Were all human DNA ever, placed end to end, it would stretch 1% of the way across the observable universe, a length of roughly 1 billion light years.

Plato believes that people acquire knowledge of geometry before we were born, as we do not acquire the basic truths of math and science through observation so therefore our souls must have lived in a perfect universe before birth

When they use the term observable universe?

Humans are closer to the size of the observable universe than they are to the smallest unit of measure (Planck length)

The first generation of stars in the Universe were all several thousand times more massive than the Sun and were made of hydrogen, helium, and trace amounts of lithium. All the heavier chemical elements were formed within their cores. One of these stars was observed for the first time in 2015.

If the Planck length is the smallest possible thing, and the observable universe is the largest possible thing, then an object which would roughly sit in the middle of these two sizes would strangely be.... an adult human body.

The number of planets in the observable universe outnumber the sum of all sounds, words, and noises uttered by every human who has ever lived.

How big is the observable universe?

If every proton in the observable universe were a monkey with a typewriter, typing from the Big Bang until the end of the universe, they would need 360,000x more time to have a 1 in 100^500 chance of producing Shakespeare's Hamlet.

Due to time dilation, a spaceship traveling at a constant acceleration of 1g (Earth gravity) would reach the edge of the observable Universe in almost a single human lifetime (100 years).

The observable universe is a spherical region of the Universe comprising all matter that can be observed from Earth at the present time, because electromagnetic radiation from these objects have had time to reach Earth since the Big Bang. Everywhere has its own observable universe

Our galaxy is part the Local Group, spanning roughly 10 million light years in diameter, making up 100 billionth of a percent of the observable universe. Humanity can never venture beyond this, because of the universe's rapid expansion. Eventually, other groups may be entirely undetectable.

A 7x7x7 Rubik's cube has 1.95·10^160 unique combinations, to put that into perspective, the amount of atoms in the observable universe is smaller (10^78 - 10^82)

If you fold a piece of paper 103 times then it won't fit in the observable universe.

Graham's number. A number so large the observable universe is far too small to contain an ordinary digital representation of Graham's number, assuming that each digit occupies one Planck volume (smallest meaningful measurement)

30 supernova occur every second somewhere in the observable Universe

Scientists estimate there are between one and two TRILLION galaxies in the observable universe

The size of the entire universe could actually be smaller than the size of the observable universe, with many seemingly different galaxies in the observable universe actually being the same galaxy at different points in time

Models of the universe began with observations made by ancient Greek philosophers.

If the Earth were the size of the nucleus of a hydrogen atom, the observable universe would have a diameter of 165.8km in comparison

The Hubble Limit represents the furthest observable objects in the universe as anything beyond it is accelerating away faster than the light it emits. Since the universe is expanding we could forever lose sight of the furthest objects.

The size of the real universe is 250 times that of the observable universe

This is our collection of basic interesting facts about Observable Universe. The fact lists are intended for research in school, for college students or just to feed your brain with new realities. Possible use cases are in quizzes, differences, riddles, homework facts legend, cover facts, and many more. Whatever your case, learn the truth of the matter why is Observable Universe so important!

Editor Veselin Nedev Editor