China's Chang'e-5 probe touched down on the surface of the Moon Tuesday just before 10:30am ET, and it's scheduled to spend the next few days collecting rocks and dust before heading back to Earth. Chinese state news outlets didn't air the touchdown live, but they reported the landing afterward with a brief video showing the probe's shadow encroaching on the pockmarked surface of the Moon. If successful, the Chang'e-5 mission will mark China's first sample-return Moon mission. It will also be the first time humans have harvested lunar rocks in 44 years. Both the United States and the Soviet Union collected Moon material throughout the Space Race in the 1960s and '70s, and US scientists are still studying these samples today.