Cosmology is a branch of technology that offers with the observe of the origin, evolution of the universe. Physical cosmology is defined as medical and scholarly look at of the beginning, evolution, structures and dynamics and also the medical laws. Cosmologists take a look at black holes fashioned inside the universe, the equivalence principle and GZK cutoff for excessive energy cosmic rays. Review articles are the precis of modern kingdom of understanding on a selected research topic. They analyze or talk studies previously published by using scientist and academicians instead of reporting novel research results. Review article comes in the shape of systematic reviews and literature critiques and are a form of secondary literature. Systematic critiques decide an goal listing of standards, and locate all previously published unique studies papers that meet the criteria. They then examine the consequences offered in these papers. Literature opinions, by means of evaluation, offer a precis of what the authors agree with are the quality and most relevant earlier guides.