The flag of Australia features a blue field with three key elements: the Union Jack in the upper left corner, the Commonwealth Star directly below it, and the constellation of the Southern Cross on the right. The Union Jack represents Australia’s historical ties to the United Kingdom, while the large seven-pointed Commonwealth Star symbolizes the unity of Australia's six states and its territories, with each point representing a state or territory. The Southern Cross constellation, made up of five white stars, reflects Australia's geographical location in the Southern Hemisphere and is a significant symbol in Australian culture and identity. This flag design was officially adopted in 1901 and has remained a prominent national symbol.