We are in the era of advanced physics. And we have been told that it is a vast universe where we live in.
In our Milky Way, there are stars even thousand times bigger than our sun, and there are billions of Milky Way like galaxies each of which consist of about 100 billion stars on a rough estimate.
A little bit science savvy people generally know to this extent.
But further to this, there is something called cluster of Galaxies that may consist of hundreds to thousands of galaxies bound together by gravity.
Then there are clusters of clusters called Superclusters.
And to the farthest point we can see, what all we see are just clusters, clusters, and clusters of galaxies.
We haven’t reached any endpoint. We have coined a term ‘observable universe’ for the part of the universe we can see and rest of the things are beyond our observation.
So this big is our universe!
Since universe is infinite, here were give you an idea about the size of the observable universe, and how far the things are. All in terms of light years.
See, we launch you from earth at nearly the speed of light, then we’ll see in how much time do you reach at particular points of the universe.
Considering Earth as the point of origin, if you leave the atmosphere at 299, 792, 458 meters per second or 99.9% the speed of light (since Einstein says nothing can be faster as light), you reach…
In 1.28 seconds you reach your first significant destination – ‘The moon’ which is Earth’s only satellite and is the nearest celestial body.
In 4.36 seconds, you reach the Red Planet.
In an estimated time of 1.18 hours, you reach the ringed planet.
In 5.35 hours, you arrive at the dwarf planet of our solar system – the last significant point in our solar system in 5.35 hours, at the speed of light.
5. PROXIMA CENTAURI
Here comes the first unfamiliar name. Proxima Centauri is the closest star to our sun.
That means, when travelled at the speed of light, to reach a sun like heavenly body, it will take a minimum of 4.3 years.
6. WOLF 1061C
WOLF 1061C is a potentially habitable planet in our Galaxy that is closest of earth. You will reach it in 13.78 earth years.
7. Center Of The MILKY WAY
Scientists estimate there may be up to 10’s or 100’s of billions of solar systems in our milky way.
Our solar system is just one of them and it situated somewhere in the disk shaped galaxy. From that point to the center of the galaxy, it will take 30, 000 years at the speed of light.
8. COMA CLUSTER
Coma cluster is a group of 1000 identified galaxies. 340 million years at the speed of light is an estimated time to cover the distance to it.
9. IC 1191
Is the largest known galaxy which is estimated to be 1.04 billion light years away from earth.
10. EDGE OF THE UNIVERSE
It’s not the real edge, but the extent of our ‘observability’. This point is 46.5 billion light years away from us. It’s something to be proud. The universe salutes the ability of humans..
So… You got something to say about the size of the universe?