Different moon rocks tell different tales about a long-ago bombardment
Prior moon rock samples, including from Apollo, seem heavily influenced by one impact. The farside samples tweak the story.
Prior moon rock samples, including from Apollo, seem heavily influenced by one impact. The farside samples tweak the story.
We summarize the week's scientific breakthroughs every Thursday.
Marine cloud brightening could cool part of the Pacific and weaken extreme El Niños, simulations suggest. But the approach could have risks.