What is in this image? Describe it as if you were explaining it to someone from the 15th century.

Imagine a scene not of this Earth but from the visions of the celestial spheres, where a magnificent flying craft, much like a dragon without wings, breathes smoke and fire from its rear. This craft speeds through the heavens, far above the sphere of our world which hangs suspended in a void, its lands and seas clearly depicted.Astride this magical steel beast is a figure, a modern knight adorned not in armor, but in a suit woven of silver cloth that encases the body completely, fitted with a glass window at the front of the helmet to view the heavens. This knight is tethered to the craft by a long, slender rope to prevent drifting into the expansive void.In the distance float several celestial orbs — one with a great circle like a belt, another smaller and marked with gentle craters. Stars sprinkle the deep blackness around, a tapestry of light distant yet clear.This drawing, therefore, is an artist’s rendering of man''s venture into the great unknown, using fantastical machines and dressed in enchanted suits, exploring far beyond the reach of any bird or cloud.