The South Pole-Aitken Basin

The South Pole-Aitken Basin is one of the largest and oldest impact craters on the Moon, spanning about 1,600 miles (2,500 km). It formed over 4 billion years ago when a massive asteroid or comet collided with the lunar surface. The basin's enormous size and depth reveal important information about the Moon's early history and the processes that shaped its crust. Its interior may contain materials from deep within the Moon, offering clues to planetary formation. Scientists study this basin to better understand not only the Moon's past but also the history of our solar system.