Answer: celestialsphere

AnswerCrossword Clue
CELESTIALSPHEREHeavens, so to speak
CELESTIALSPHEREHeavens above
CELESTIALSPHEREPart of a planetarium.
CELESTIALSPHEREImaginary shell formed by the sky
CELESTIALSPHEREFirmament