"The Planet of Doubt" is a

science fiction Science fiction (sometimes shortened to Sci-Fi or SF) is a genre of speculative fiction which typically deals with imaginative and futuristic concepts such as advanced science and technology, space exploration, time travel, parallel unive ...

short story A short story is a piece of prose fiction that typically can be read in one sitting and focuses on a self-contained incident or series of linked incidents, with the intent of evoking a single effect or mood. The short story is one of the oldest ...

by American writer Stanley G. Weinbaum that was first published in the October 1935 issue of ''

Astounding Stories ''Analog Science Fiction and Fact'' is an American science fiction magazine published under various titles since 1930. Originally titled ''Astounding Stories of Super-Science'', the first issue was dated January 1930, published by William Cl ...

''. It is Weinbaum's third story featuring Hamilton Hammond and Patricia Burlingame, a sequel to " Parasite Planet" and " The Lotus Eaters".

Plot summary

Following his expedition to the night side of

Venus Venus is the second planet from the Sun. It is sometimes called Earth's "sister" or "twin" planet as it is almost as large and has a similar composition. As an interior planet to Earth, Venus (like Mercury) appears in Earth's sky never fa ...

, the

Smithsonian Institution The Smithsonian Institution ( ), or simply the Smithsonian, is a group of museums and education and research centers, the largest such complex in the world, created by the U.S. government "for the increase and diffusion of knowledge". Founded ...

appoints Hamilton "Ham" Hammond to head an expedition to

Uranus Uranus is the seventh planet from the Sun. Its name is a reference to the Greek god of the sky, Uranus (mythology), Uranus (Caelus), who, according to Greek mythology, was the great-grandfather of Ares (Mars (mythology), Mars), grandfather ...

. In Weinbaum's version of the

Solar System The Solar SystemCapitalization of the name varies. The International Astronomical Union, the authoritative body regarding astronomical nomenclature, specifies capitalizing the names of all individual astronomical objects but uses mixed "Solar S ...

, all of the

gas giant A gas giant is a giant planet composed mainly of hydrogen and helium. Gas giants are also called failed stars because they contain the same basic elements as a star. Jupiter and Saturn are the gas giants of the Solar System. The term "gas giant" ...

s generate significant amounts of

infrared Infrared (IR), sometimes called infrared light, is electromagnetic radiation (EMR) with wavelengths longer than those of visible light. It is therefore invisible to the human eye. IR is generally understood to encompass wavelengths from around ...

radiation, enough to produce Earthlike environments on the inner moons of

Jupiter Jupiter is the fifth planet from the Sun and the List of Solar System objects by size, largest in the Solar System. It is a gas giant with a mass more than two and a half times that of all the other planets in the Solar System combined, but ...

and

Saturn Saturn is the sixth planet from the Sun and the second-largest in the Solar System, after Jupiter. It is a gas giant with an average radius of about nine and a half times that of Earth. It has only one-eighth the average density of Earth; h ...

and on the surface of Uranus itself. At the time "The Planet of Doubt" takes place at the turn of the 22nd century, the limited range of the spaceships ensures that Uranus can only be reached from the American base on Titan when Saturn reaches conjunction with Uranus, an event that occurs once every forty years.Weinbaum makes an astronomical error here; while there is indeed a conjunction of Uranus and Saturn in 2100, it is the ''wrong'' conjunction, placing Saturn and Uranus on the opposite sides of the Sun, instead of on the same side. The Young expedition explored the planet's south pole in 2060; now Hammond takes his ship, the ''Gaea'', to the north pole. Finding an ocean at the north pole, Hammond sends the ''Gaea'' spiraling southeast until they reach land. They find the surface of Uranus largely barren with a few plants. The surface is shrouded in a thick fog which absorbs radio waves as well as visible light, and there is no planetary magnetic field to work a compass, so the members of the expedition, including Hammond's wife, the Venusian-born biologist Patricia Burlingame, must remain tethered to the ship to avoid getting lost. While Hammond and Burlingame explore, she starts seeing vague shapes in the fog; Hammond begins to see them too. When they receive a signal from the ship, they hurry back to find it under attack by an immensely long black creature made up of dozens of connected segments. They manage to fight it off and return to the ship. Burlingame decides that the creature is similar to the larval

Thaumetopoeidae Thaumetopoeinae is a subfamily of moths in the family Notodontidae. This group is sometimes treated as a family Thaumetopoeidae with three subfamilies: Thaumetopoeinae, Anaphinae and Epicominae. However, it is now commonly treated at subfamily ra ...

, which forms processions when it travels from its nest. She hypothesizes that the individual segments link nervous systems so that they all act in unison. As for the shapes in the fog, Burlingame thinks they are analogous to

honeyguides Honeyguides (family Indicatoridae) are near passerine birds in the order Piciformes. They are also known as indicator birds, or honey birds, although the latter term is also used more narrowly to refer to species of the genus ''Prodotiscus''. The ...

, and that they lead the segment-creature to its prey. On their last foray from the ship, Burlingame sees a new type of flora beyond the reach of her tether. Against Hammond's orders, she frees herself from the tether to approach it. Hammond summons the ship's other two crew members, leaves a note for them at the end of the tether, then frees himself. He wanders lost for hours before accidentally coming across the tether again. He and the rest of the crew continue searching for forty hours before finally finding Burlingame resting within a segment-creature that has formed a closed loop. The other crew members boost Hammond over the segment-creature. He pulls a rope taut between him and them and Burlingame climbs across, then Hammond vaults over the moving segment-creature. Back on board the ''Gaea'', Burlingame reveals that shortly after leaving her tether, she ran into a segment-creature which began chasing her. She had the idea of running up to the last creature in the line so that the leader would latch onto it, but inadvertently left herself inside the circle instead of outside. She also deduced that the shapes in the fog were the shadows of flying creatures, and that the segment-creatures were their larvae.

Collections

"The Planet of Doubt" appears in the following Stanley G. Weinbaum collections: * '' A Martian Odyssey and Others'' (1949) * ''A Martian Odyssey and Other Science Fiction Tales'' (1974) * ''Interplanetary Odysseys'' (2006)

References

External links

*
"The Planet of Doubt"
at Project Gutenberg of Australia. {{DEFAULTSORT:Planet of Doubt, The 1935 short stories Fiction set in the 2060s Short stories by Stanley G. Weinbaum Fiction set on Titan (moon) Fiction set on Uranus Works originally published in Analog Science Fiction and Fact