EVERYDAY SCIENCE

Detailed explanation-1: -The standard model of big bang cosmology, known as lambda cold dark matter, proposes two hypothetical entities―dark matter and dark energy―to explain the structure and history of the universe.

Detailed explanation-2: -• The Doppler red-shift of light observed from distant stars and galaxies gives evidence that the universe is expanding (moving away from a central point). This allows for Big Bang Theory, because after a “bang” occurs all of the matter moves away from the point of origin.

Detailed explanation-3: -Simply put, it says the universe as we know it started with an infinitely hot and dense single point that inflated and stretched-first at unimaginable speeds, and then at a more measurable rate-over the next 13.7 billion years to the still-expanding cosmos that we know today.

Detailed explanation-4: -Three key pieces of observational evidence lend support to the Big Bang theory: the measured abundances of elements, the observed expansion of space, and the discovery of the cosmic microwave background (CMB). The CMB refers to the uniform distribution of radiation that pervades the entire universe.