A canyon is a deep, narrow valley with steep sides. Here on Earth, canyons are typically formed by long-term erosion from ...
Scientists have long thought that the South Pole-Aitken basin was formed by a shallow-angle impact, but new research suggests ...
Scientists found that an asteroid impact carved two massive canyons on the moon in minutes. High-speed debris helped shape ...
CAPE CANAVERAL, Fla. (AP) - New research shows that when an asteroid slammed into the moon billions of years ago, it carved out a pair of grand canyons on the lunar far side.