This is a global view to show the entirety of the South Pole-Aitken basin (SPA), the largest and oldest impact crater on the Moon. For geographic context, the letters label other big craters in ...

It would take over two days to reach it by boat. The Geographic South Pole is the most southerly point on Earth. It changes each year because the ice sheet that covers the land is continually moving.

This is paying dividends. The new map covers all the Southern Ocean floor poleward of 50 degrees South. If you divide its 48 million sq km into 500m grid squares, 23% of these cells now have at ...