. . "Celestial sphere" . "northern celestial hemisphere" . . "celestial point in the sky" . . "celestial hemisphere" . "distant stars" . "sphere of stars" . "Celestial" . . . "coronal line" . "celestial hemispheres" . "Heaven" . "celestial equator" . "spherical" . "shaped like a sphere" . "heavens" . "southern sky" . "celestial dome" . "hemispheres" . . "celestial" . "equatorial plane" . . "the sky around Earth" . . "celestial ''n''-sphere" . . "spherical background" . "1.5\u00B0" . "hemisphere" . . "projection screen" . . "arbitrary sphere" . . "sphere" . "sky" . "celestial spheres" . "projected in the sky" . "the heavens" . "southern" . "northern sky" . . "background" . "Celestial sphere" . "celestial sphere" .