interplanetary

[ in-ter-plan-i-ter-ee ]

/ ˌɪn tərˈplæn ɪˌtɛr i /

being or occurring between the planets or between a planet and the sun.

Origin of interplanetary

First recorded in 1685–95; inter- + planetary

The plan is to mine asteroids to be used on Earth and for interplanetary travel.

James Cameron and Investors Seek to Lasso and Mine an Asteroid |Vivien Marx |April 24, 2012 |DAILY BEAST
But a vast amount of it will be spent in interplanetary doldrums, waiting to arrive at the destination.

How Space Agencies Are Preparing for a Mission to Mars |Josh Dzieza |February 12, 2011 |DAILY BEAST
"Maybe they were bravely defending their own planet by hunting down an interplanetary raider," I suggest.

The Lost Kafoozalum |Pauline Ashwell
Piece by piece, it was chipped away and brought to the Earth in Interplanetary freight cars.

John Jones's Dollar |Harry Stephen Keeler

After nearly forty years, the Cold War was still going on, but now the scale had expanded from the global to the interplanetary.

What The Left Hand Was Doing |Gordon Randall Garrett
And you actually got Interplanetary Life to give you a mortgage on the structure?

The Ultimate Weapon |John Wood Campbell
Fellow from the Interplanetary News Agency wants you to broadcast a copyrighted story.

Astounding Stories of Super-Science, August 1930 |Various

interplanetary

/ (ˌɪntəˈplænɪtərɪ, -trɪ) /

of, relating to, or existing between planets