The document asks a series of questions about basic astronomy and optics concepts including: how long it takes Earth to revolve around the sun; what causes Earth's seasons and day/night cycles; the differences between solar and lunar eclipses; the properties of concave and convex lenses; the definition of inertia; how refraction works; transparency versus opacity; features of the sun like coronas and prominences; the inner and outer planets in our solar system; and how vision and color perception function.