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Cosmic Microwave Background-Bharat

Cosmic Microwave Background-Bharat

Why in news ?

A three-week long programme entitled, ‘Cosmology – The next decade’,was  held at ICTS-TIFR, Bengaluru. It  discussed about  project Cosmic Microwave Background-Bharat , that helps in listening to  the faintest murmurs of the early universe .

What is CMB?

  • The CMB  is electromagnetic radiation as a remnant from an early stage of the universe in Big Bang cosmology.
  • It is the radiation left over from an early stage in the development of the Universe .
  • Moreover, the discovery of CMB is landmark evidence of the Big Bang origin of the universe.
  • In addition to , CMB is a cosmic background radiation that is fundamental to observational cosmology because it is the oldest light in the Universe and can be found in all directions
  • It fills up all space that is an important source of data on the early universe because it is the oldest electromagnetic radiation in the universe, dating to the epoch of recombination
  • Subsequent to the discovery of the CMB, hundreds of cosmic microwave background experiments conducted to measure and characterize the signatures of the radiation.
  • Besides, The most famous experiment is probably the NASA Cosmic Background Explorer (COBE) satellite that orbited in 1989–1996 and which detected and quantified the large scale anisotropies at the limit of its detection capabilities.

Significance of  Cosmic Microwave Background-Bharat project : 

  • CMB-Bharat is a proposal for comprehensive next generation Cosmic Microwave Background (CMB) mission in international collaboration with major Indian contribution.
  • The “ultra high goal” was the first clear signature of quantum gravity and ultrahigh energy physics in the very early universe.
  • The “high” goals of discovering about neutrino species, their total mass and mass hierarchy; map all dark matter and most baryons in the observable universe,
  • It helps to generate rich galactic , extragalactic astrophysics datasets and even the cosmological model .
  • CMB-Bharat mission presents an unique opportunity for India to lead in fundamental that proves spectacular success

What  is Big bang :

  • The Big Bang theory is the prevailing cosmological model for the birth of the universe.
  • Moreover , It states that at some moment all of space was contained in a single point from which the Universe has been expanding ever since.
  • Modern measurements place this moment at approximately 13.8 billion years ago, which is thus considered the age of the universe
  • After the initial expansion [inflation], the Universe cooled sufficiently to allow the formation of subatomic particles, and later simple atoms.
  • The majority of atoms produced by the Big Bang were hydrogen, along with helium.
  • Giant clouds of these primordial elements later coalesced through gravity to form stars and galaxies.
  • According to this theory, the universe, ever since its birth, is expanding in all directions uniformly.

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