It has taken more than two decades of collaborations, five years of continuous observation, hundreds of scientists from various institution. And EUREKA! we have the largest ever 3-D map of the Universe!
And atlast, They have made it: Astrophysicists unveil this huge mysterious discovery which is the 3D model of universe that was founded on Monday. This analysis for four million of galaxies and quasars(It is the super-bright galaxies lit up by material onto a central super-massive black hole)
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| This author's prediction on the 3-D image of Universe|Image credit(Institute of Theoretical physics) |
The researchers said that it might be due to the presence of an invisible dark energy which resembles the Albert Einstein's Theory Of Relativity......what is Relativity?
RELATIVITY:-
- It is coined by the legend,Albert Einstein which is actually the theory of gravity.
- According to this discovery, gravity is a curving or warping of space.
- The more massive an object is, it will more warps the space around it.
- Let's take an example- The sun is massive enough to warp space across our solar system.
- As a result, the Earth and all the planets revolves in a circular path(orbits) around it.
This 3d map of universe also revealed that the Universe's expansion began to accelerate at some point and has since continuing.
For more understanding of this expansion of the Universe over billions of years, we have to study more & more about Galaxies and Distance measurements.
Astrophysicists have known for years that the Universe is expanding, but have been unable to measure the rate of expansion with precision.
The currently accepted rate, called the "Hubble constant", is 10 per cent lower than the value calculated from the distances between the galaxies closest to us.
The 3d map of universe relied on the filaments of matter and voids that precisely define the structure of Universe since it's beginning, when it was 380,000 years old.
Astrophysicists have known for years that the Universe is expanding, but have been unable to measure the rate of expansion with precision.
The currently accepted rate, called the "Hubble constant", is 10 per cent lower than the value calculated from the distances between the galaxies closest to us.
The 3d map of universe relied on the filaments of matter and voids that precisely define the structure of Universe since it's beginning, when it was 380,000 years old.
For the part of the map relating to the Universe six billion years ago, researchers observed the oldest and reddest galaxies as well.
For more distant eras, they concentrated on the youngest galaxies - The Blue Ones. To go back even further, they used quasars, galaxies whose supermassive black hole is extremely luminous.
Comparisons of the eBOSS observations with previous studies of the early universe have revealed discrepancies in estimates of the rate of expansion.
Extra Information
1. How much of the universe is mapped?
The Universe is mapped out to about 2 billion light years across. This number is increasing everyday but this whole process of mapping the Universe is very slow and complicated as well.
2. How did we map the universe?
By measuring the Redshift of a galaxy, we could actually get a 3d map which is converted from the flat image of sky.
Redshift is nothing but an observation of light from distant galaxies.
This is one of the biggest discovery, many more discoveries are yet to be done.
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