No, Australia is not wider than the Earth’s moon. In terms of diameter, the moon is approximately 3,474 kilometers (2,159 miles) across, whereas Australia has a maximum width of around 4,000 kilometers (2,485 miles) from east to west. Therefore, Australia is wider than the moon. It’s worth noting that the moon is relatively small compared to the Earth, as its diameter is about one-fourth that of our planet.