Aerosmith's "Spaced" faces off against "Starship Trooper" by Yes in the first round of our intergalactic Rock Star Wars battle.

To try and fill our days between now and the arrival of 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.

"Starship Trooper," from 1971's The Yes Album, is one of Yes' most acclaimed compositions. Named after a 1959 novel by Robert Heinlein, this three-part epic tackles some pretty heady topics: the search for God, the way we treat our planet and, of course, the possibility of life on other planets.

Although Steven Tyler sings about "finding another planet to stay" on "Spaced," in truth this gritty song from Aerosmith's 1974 album Get Your Wings seems primarily focused with inner space. The song's protagonist seems to be the last survivor of some terrible ordeal – and the experience has left him numb, spaced and losing what's left of his mind.

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 Aerosmith Perform 'Spaced'

Listen to Yes Perform 'Starship Trooper'

Aerosmith Albums, Ranked Worst to Best