地球自转白板动画

A simple space science illustration: a bright yellow Sun on the far left edge, and a large Earth globe on the right. The Earth's axis is drawn as a thin straight line through the North and South poles, tilted to one side. The half of the Earth facing the Sun is bright daylight and the half facing away from the Sun is dark night, with a clear day-night boundary. One curved arrow wraps around the Earth's middle showing it spinning around its tilted axis. Only these elements: Sun, Earth, axis line, one curved arrow; nothing else in the picture, no stars, no Moon. Lots of empty space, 4:3. Coloured pencil and watercolour marker, clean black ink outlines, warm off-white paper, no text.