The scars on Ceres should have softened by now. That was the long-running problem. If the dwarf planet’s crust held a great deal of ice, many of its craters should have slowly sagged over geologic ...
The scars on Ceres should have softened by now. That was the long-running problem. If the dwarf planet’s crust held a great deal of ice, many of its craters should have slowly sagged over geologic ...