"I am very excited we successfully imaged quantum scars in a real quantum system," said first and co-corresponding author Zhehao Ge, a UC Santa Cruz graduate student at the time of this study's completion.

“The oxygen reaction is very slow,” says Ge Zhang, a chemical engineer at Stanford University.

Fei Ge - the man who had just meticulously checked Rui and Michael’s harnesses before sending them over the cliff - knows better than most the feeling of stepping back over the edge.

Ge Ping, vice director of China's Lunar Exploration and Space Engineering Center, told reporters ahead of the launch: "Chang'e-6 will collect samples from the far side of the Moon for the first time."

"Witnessing the successful elimination of T-cell cancers while sparing normal T cells in preclinical models was truly gratifying," adds Jiaxin Ge, a co-author of the study and third-year Ph.D. student in the Ludwig Center.