All interplanetary synonyms
in·ter·plan·e·tar·y
I i adjective interplanetary
- space — the unlimited or incalculably great three-dimensional realm or expanse in which all material objects are located and all events occur.
- planetary — of, relating to, or resembling a planet or the planets.
- interstellar — Astronomy. situated or occurring between the stars: interstellar dust.
- intergalactic — of, existing, or occurring in the space between galaxies: The science-fiction movie was about an intergalactic war.
- astronomical — If you describe an amount, especially the cost of something as astronomical, you are emphasizing that it is very large indeed.