Definition

1. Noun:
   • The region of outer space that exists between the planets within a solar system: "Interplanetary space" specifically refers to the vast, mostly empty volume that separates the planets as they orbit a star. It is not a perfect vacuum, as it contains sparse particles, dust, magnetic fields, and the solar wind.

Examples of Usage

• Noun:
  • The Voyager probes are now traveling through interplanetary space.
  • Scientists study the solar wind and cosmic rays in interplanetary space.
  • The asteroid belt occupies a region of interplanetary space between Mars and Jupiter.

Advanced Usage

• "interplanetary space mission": A spaceflight designed to travel through or explore the space between planets.
  • The agency is planning an ambitious interplanetary space mission to the outer planets.

Variants and Related Words

• Interplanetary (adj): Of or relating to interplanetary space or travel between planets.
  • Interplanetary travel presents significant engineering challenges.
• Interstellar space (n): The physical space within a galaxy beyond the influence of a star system. (This is a distinct, larger region than interplanetary space).
• Intergalactic space (n): The physical space between galaxies.

Synonyms

• Interplanetary void: Emphasizes the emptiness of the region.
• Interplanetary medium: Refers specifically to the matter (like gas, dust, plasma) that exists in interplanetary space.

Related Phrases

• To traverse interplanetary space: To travel across the space between planets.
  • The spacecraft will take several months to traverse interplanetary space and reach its target.

Noun

1. the part of outer space within the solar system