Example image of eyePlorer eyePlorer map for 'Solstice': Earth North Rotation South Sun Year Declination Latin Equinox Roman Republic Natural History (Pliny) Pliny the Elder Relative velocity Frame of reference Ellipse Focus (geometry) Inertial space Orbit Axial tilt Orbital plane (astronomy) Star Celestial coordinate system Elevation Horizon Ecliptic Subsolar point Tropic of Cancer Tropic of Capricorn Arctic Circle Midnight sun Antarctic Circle Temperateness Orbital eccentricity Apsis Milankovitch cycles Diurnal motion Twilight Culmination Equator Zenith Astronomer White Nights Polar night Celestial navigation Celestial sphere Circle Circumference Parallel Perpendicular Sphere