using the sense of smell, and Giskard, due to his abilities but allegedly due to his infrared vision. Telepathy, contradictions between the Three Laws and industrial espionage are all important themes in both books. References External links 1957 American novels Amalthea (moon) Doubleday (publisher) books Fiction set on Io (moon) Fiction set on Jupiter's moons Science fiction novels by Isaac Asimov Fiction set around Sirius Works published under a pseudonym