Expansions refer to the process of increasing or growing in size, scope, or influence. This can happen in various contexts, such as in business, where a company like Amazon might expand its operations into new markets or product lines. Expansions can also occur in nature, such as when a city grows to accommodate more people, leading to the development of new neighborhoods and infrastructure. In the realm of science, expansions can describe physical phenomena, like the expansion of the universe, where galaxies move away from each other over time. This concept helps scientists understand the origins and future of our cosmos, illustrating how everything is constantly changing and evolving.