On Dec. 17, 2012, NASA's GRAIL mission crashed into the moon. Space History Archives👉 https://space-com.visitlink.me/vCwcJE GRAIL stands for Gravity Recovery And Interior Laboratory, and the mission consisted of two twin spacecraft named Ebb and Flow that are about the size of a washer and dryer. They orbited the moon in tandem to map the moon's gravity field.The mission lasted about nine months, and they even completed an extended mission before the spacecraft began to run low on fuel, so NASA