Mercury in fiction


The planet Mercury has often been used as a setting in science fiction. Recurring themes include the dangers of being exposed to solar radiation and the possibility of escaping excessive radiation by staying within the planet's slow-moving terminator. Another recurring theme is autocratic governments, perhaps because of an association of Mercury with hot-temperedness. Nonetheless, there may be scientific support, based on studies reported in March 2020, for considering that parts of the planet may have been habitable, and perhaps that actual life forms, albeit likely primitive microorganisms, may have existed on the planet after all.

Description

announced in 1889 that Mercury was tidally locked to the Sun, orbiting with one face permanently turned toward it and another face turned away. Theories stated that the "brightside" had molten metal puddles, the "darkside" had the planet's former atmosphere in frozen form, and a "twilight belt" between the two. This concept of Mercury was disproven in 1965, when radio astronomers discovered that Mercury rotates three times for every two revolutions, exposing all of its surface to the Sun.
Authors' descriptions of Mercury changed as knowledge of the planet's environment increased. Fictional works about Mercury can thus be divided into two groups; those, mostly written before 1965, featuring the "Old" Mercury with its light and dark sides, and those that reflect more recent scientific knowledge of the planet.

Literature

"Old Mercury"

The planet has also been a setting for several television series: