cosmic microwave background

lambda

What is Cosmological Constant – (Λ)

Einstein introduced the cosmological constant into his equations as a repulsive force to counteract gravity, aiming to describe a static universe. However, in 1929, Edwin Hubble’s discovery of the expanding nature of the universe challenged Einstein’s assumptions, leading him to regard the cosmological constant as his “greatest blunder.”

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Lambda-CDM Model: Unveiling the Foundations of Big Bang Cosmology

The Lambda-CDM model, also known as the Lambda Cold Dark Matter model, is a prevailing cosmological framework that describes the evolution and structure of the universe. This model combines two key components: Lambda (Λ), representing dark energy, and Cold Dark Matter (CDM). In addition, ordinary matter plays a significant role in shaping the universe. In

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cmb

What is Recombination & Cosmic Microwave Background?

the universe had cooled down sufficiently for electrons and protons to combine and form neutral hydrogen atoms. Prior to recombination, the high temperature and density of the universe prevented electrons from stably binding with protons, resulting in a plasma of charged particles that strongly scattered light. This scattering made the early universe opaque to photons.

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