 But first, this week, China's Chang'e 6 robot lander returned to Earth, bringing samples of rock and dust from the far side of the moon. Here to tell us more and other stories from this week's news is Rachel Feltman, host of The Weirdest Thing I Learned This Week and Scientific American's Science Quickly podcasts. Welcome back, Rachel. Thanks for having me. So we talked about this moon mission when it was just about to land. What's it been up to since then?