Universe by numbers refers to the quantitative exploration and understanding of the cosmos through key numerical values that define its structure, evolution, and components. This approach involves measuring and analyzing various aspects of the universe, such as its age, size, expansion rate, and the abundance of different types of matter and energy. By examining these numbers, scientists can gain insights into the fundamental laws governing the universe and its ultimate fate. The term "Universe by numbers" can be translated to Hebrew as היקום במספרים (HaYakum B'misparim). In other languages, it might be rendered as L'univers en chiffres in French, Das Universum in Zahlen in German, and El universo en números in Spanish. Key contextual information includes the Hubble constant, which measures the rate of the universe's expansion, and the cosmic microwave background radiation, which provides a snapshot of the early universe. Additionally, the ratio of dark matter to ordinary matter and the density of dark energy are crucial numbers that help scientists understand the composition and behavior of the cosmos.