What does interplanetary mean?
Interplanetary is an adjective describing anything located, occurring, or occurring between planets. It is commonly used in phrases such as interplanetary space, interplanetary travel, and interplanetary missions. In scientific contexts, the term may refer to dust, radiation, magnetic fields, or other conditions in the space separating planetary bodies. In science fiction, it often describes journeys or communication across the solar system and beyond. The word is more precise than planetary, which can mean relating to a planet or planets in general, whereas interplanetary specifically emphasizes the space between them. It should not be confused with interstellar, which describes space or phenomena between stars rather than between planets.
adjectiveExisting, occurring, or taking place between planets. It may also refer to travel or communication between planets.
- Existing, occurring, or taking place between planets.
- Involving travel, communication, or interaction between planets.
"The mission will study the interplanetary environment between Earth and Mars."
"Scientists are tracking dangerous interplanetary debris in the solar system."
"The novel imagines a civilization that has mastered interplanetary travel."
Interplanetary: the word that describes humanity's neighborhood beyond Earth.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does interplanetary come from?
Interplanetary was formed in English by combining the prefix inter-, meaning “between” or “among,” with planetary, which in turn comes from Latin planetarius, relating to a planet. The ultimate roots are Latin planeta, “wandering star,” and Greek planētēs, “wanderer.” The compound form developed as astronomy and space exploration made the space between planets an important subject of study.
How interplanetary is actually used
The term is chiefly used in astronomy, spaceflight, and science fiction. It is more specific than planetary, which can describe a planet itself or anything associated with planets.
Easily confused with interplanetary
Interplanetary means between planets, whereas interstellar means between stars.
Planetary can refer to planets generally, while interplanetary specifically concerns the space or conditions between planets.