Final answer:
Observations and measurements have confirmed key predictions of the Big Bang model, including the abundances of elements in the universe and the characteristics of the cosmic microwave background radiation. Experimental estimates and high-energy accelerator experiments provide strong evidence in support of the Big Bang model.
Step-by-step explanation:
The Big Bang model has been confirmed by several observations and measurements. One of the key predictions of the model is the abundances of elements in the universe, which have been experimentally estimated and found to agree with model predictions. This agreement provides strong evidence for the Big Bang model. Additionally, the observation of the cosmic microwave background radiation, which has a blackbody spectrum characteristic of the Big Bang's remnant, is another compelling evidence of the creation of the universe in a gigantic explosion.
Furthermore, experiments with high-energy accelerators have confirmed the prediction of three types of neutrinos, as predicted by the Big Bang model. These confirmations of key predictions further support the validity of the Big Bang model and its explanation of the expansion of the universe, the observations of the cosmic microwave background, and the abundances of light elements.