NASA may have landed on the Moon decades ago,but that doesn’t mean we know all that much about our nearest celestial~1 neighbor.We’re regularly learning new things as we stare at the lunar surface from Earth,and NASA and other space groups have sent various probes~2 and orbiters~3 to study it in greater detail than was possible.几十年前,美国国家航空航天局已经登陆月球,但这并不意味着我们很了解这个最近的天体邻居。当我们从地球上凝视月球表面时,经常会发现新的东西。