solar systems center of gravity the sun illuminating all around it

sunlight brightness energy heat illumination radiance gravity solstice eclipse solar orbit sunbeam helios coronal solarium sunspot daylight sunrise sunset zodiac astrology telescope ellipse ultraviolet infrared geocentric heliocentric flare galactic sunscreen sunflower parhelic fusion hydrogen tangent nebula hilal universe planet celestial longitude latitude stellate cosmology nebulous hemisphere auroras thermosphere troposphere chromosphere systems center sun illuminating