Scientists have charged up an old moon mystery. New research suggests that swirling designs on the dusty lunar surface might be the product of electric fields generated by pockets of magnetic bubbles.
The milky patterns stand out like pale flesh against darkly tanned skin. It’s as if you used sunblock to paint whorls on your arm and then spent the day outside, says planetary geologist Georgiana Kramer of the Lunar and Planetary Institute in Houston. The sun would color everything but the protected skin, leaving the whorls white.