Meaning of the Sanskrit Word: antariksam

  antarīkṣam—outer space    SB 8.18.4
  antarikṣam—the sky or outer space    SB 5.21.2
  antarikṣam—in the sky or outer space    SB 5.24.5
  āntarīkṣam—obtained by chance    SB 7.14.7

Can't find any compound Sanskrit words containing antariksam.