A pair of outer-space rock 'n' roll songs square off against each other in the first round of our Rock Star Wars battle.

To try and fill our days between now and the new Star Wars: The Force Awakens movie, we’ve tracked down 32 space-themed classic rock songs and paired them off against each other in 16 first-round battles. The field will be halved every week based on your votes, until only the spaciest song in rock history remains standing.

Megadeth's "Hangar 18," from their 1990 album Rust in Peace, references a real-life Hangar 18 at an Air Force base in Dayton, Ohio, where UFO conspiracy theorists claim an alien spaceship is stored from the famous crash-landing of one in Roswell, N.M., in 1947. The song itself digs deeper into conspiracies, with its narrator fearing for his life from "military intelligence" because he knows too much.

Steve Miller Band's "Space Cowboy" is filled with references too, but most of them have to do with past Miller records. Like on "The Joker" -- which was released four years later in 1973 and makes references to this song -- "Space Cowboy" coyly plays with the singer and guitarist's past. While there's some talk of "traveling through space," the song is mostly a look at Miller's '60s San Francisco at the end of the decade.

So which of these songs will emerge victorious from this round? It’s your choice. You can listen to both tracks below, and vote once per hour in each of the this round's Rock Star Wars battles until polls close on Nov. 23 at 11:59PM ET. Your choice for our Rock Star Wars champion will be revealed on Dec. 22, 2015.

Listen to Megadeth's 'Hangar 18'

Listen to Steve Miller Band's 'Space Cowboy'

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