the.com/selenology

The science of obsessing over a rock that controls Earth's tides from afar.

means The scientific study of the Moon — its surface, composition, geology, and history.

from From Selene, the Greek goddess and personification of the Moon, plus the familiar suffix '-logy' (study of), from Greek 'logos,' meaning word or reason. Selene drove her glowing chariot across the night sky in Greek myth; the same name lingers in the element selenium, christened by Berzelius because it pairs naturally with tellurium, named for the Earth. So selenology is, quite literally, goddess-of-the-Moon-ology.

named for
Selene, Greek goddess of the moon
older than spaceflight
Galileo mapped lunar craters by telescope in 1609
moonquakes exist
Apollo seismometers caught the moon rumbling
drifting away
The moon retreats 3.8 centimeters yearly
far side
Humans never saw it until 1959
for instance

lunar reconnaissance orbiter — nasa spacecraft launched 2009, mapping moon's surface at 0.5m resolution

apollo 11 samples — 47.5 kg of moon rocks collected july 1969, studied for lunar geology

chang'e 5 mission — chinese lunar lander 2020, returned 1.731 kg of moon soil to earth

the.com · every word