NEW YORK — All the stars, planets and galaxies that can be seen today make up just 4 percent of the universe. The other 96 percent is made of stuff astronomers can't see, detect or even comprehend. These mysterious substances are called dark energy and dark matter..
Similarly, you may ask, what percentage of the universe is Earth?
So the Earth takes up 0.0000000000000000000000000000000000000000000000000000000003 % of the entire universe or 3.08e-58% or 3.08e-60 not expressed as a percentage. This also means the universe is 879,873,000,000,000,000,000,000 kilometers across.
Additionally, how big is the known universe? 46.508 billion light years
Also asked, can we see the entire universe?
There is no evidence that the universe has an edge. The part of the universe we can observe from Earth is filled more or less uniformly with galaxies extending in every direction as far as we can see - more than 10 billion light-years, or about 6 billion trillion miles.
How much of space is unexplored?
To date, scientists have explored about 4 percent of the visible universe. That's made up of planets, stars and galaxies that astronomers can see. Yet, there's a vast part – the other 96 percent – that scientists cannot see.
Related Question Answers
What is outside 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.What is dark matter made of?
The familiar material of the universe, known as baryonic matter, is composed of protons, neutrons and electrons. Dark matter may be made of baryonic or non-baryonic matter. To hold the elements of the universe together, dark matter must make up approximately 80% percent of the universe.What is our universe made of?
What is the Universe made of? The Universe is thought to consist of three types of substance: normal matter, 'dark matter' and 'dark energy'. Normal matter consists of the atoms that make up stars, planets, human beings and every other visible object in the Universe.What is dark energy in the universe?
Dark Energy. Dark Energy is a hypothetical form of energy that exerts a negative, repulsive pressure, behaving like the opposite of gravity. It has been hypothesised to account for the observational properties of distant type Ia supernovae, which show the universe going through an accelerated period of expansion.Where does space end?
No, they don't believe there's an end to space. However, we can only see a certain volume of all that's out there. Since the universe is 13.8 billion years old, light from a galaxy more than 13.8 billion light-years away hasn't had time to reach us yet, so we have no way of knowing such a galaxy exists.How old is our universe?
13.8 billion years
How big is the unobservable universe?
46.508 billion light years
How far is the speed of light?
The speed of light in a vacuum is 186,282 miles per second (299,792 kilometers per second), and in theory nothing can travel faster than light. In miles per hour, light speed is, well, a lot: about 670,616,629 mph.Is the universe a sphere?
Shape of the observable universe The observable universe can be thought of as a sphere that extends outwards from any observation point for 46.5 billion light years, going farther back in time and more redshifted the more distant away one looks.Is there a center of the universe?
The center of the Universe is a concept that lacks a coherent definition in modern astronomy; according to standard cosmological theories on the shape of the universe, it has no center. Historically, different people have suggested various locations as the center of the Universe.How thick is the universe?
46.5 billion light-years
How is the universe infinite?
Our universe is just a finite number of galaxies rushing away from each other inside this empty infinite space—like a solitary skyrocket exploding and sending out a doomed shower of sparks." But many cosmologists say, no, there are an infinite number of galaxies in our infinite space.How many Earth years is a Lightyear?
For most space objects, we use light-years to describe their distance. A light-year is the distance light travels in one Earth year. One light-year is about 6 trillion miles (9 trillion km).How many suns are in our galaxy?
250 billion ± 150 billion
Is the observable universe shrinking?
Physicists Paul Halpern and Nick Tomasello from the University of the Sciences in Philadelphia have used new data on the Universe's expansion collected by the European Space Agency's (ESA) Planck satellite, and found that the observable edge of the Universe is actually 0.7 percent smaller than we thought.What is after 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.How many galaxies are there 2019?
In fact, you can get a spectacular number by doing so: 5500 multiplied by 32 million comes out to an incredible 176 billion galaxies. But that's not an estimate; that's a lower limit. Nowhere in that estimate do the too-faint, too-small, or too-close-to-another galaxies show up.How is space infinite?
If the universe is infinite, it has always been infinite. At the Big Bang, it was infinitely dense. Since then it has just been getting less dense as space has expanded. In the infinite case, you wouldn't have enough curvature for spacetime to form the hypersphere.How far does outer space go?
This extends well out into translunar space to a distance of roughly 1% of the mean distance from Earth to the Sun, or 1.5 million km (0.93 million mi). Deep space has different definitions as to where it starts. It has been defined by the United States government and others as any region beyond cislunar space. 
