Inquiries about the moon’s twilight zone, and more reader feedback
Your letters and comments on the Aug. 5, 2017, issue of Science News
Locked up
Simulations suggest that heat from an infant Earth, the sun and the moon could have vaporized the moon’s metals into a thick atmosphere, Lisa Grossman reported in “Metallic air may have swaddled moon” (SN: 8/5/17, p.