Something weird is going on on the far side of the Moon — and Artemis astronauts are heading straight there. The giant South Pole–Aitken basin, a 4.3-billion-year-old scar, isn’t just an impact crater ...

As astronauts prepare for south-polar landings, a new look at the Moon’s biggest crater points to a pivotal moment in lunar history—and to the rocks you’ll want sampled next. A study led by Jeffrey ...