What is the orbital velocity of the moon Titan as it orbits Saturn with an average orbital radius of 1.22 E' m. (Saturn has a mass of 5.68 E26 kg. )

When you see distant streetlights through smog, they look dimmer and redder than they do normally. but when you see the same streetlights through fog or falling snow, they look dimmer but not redder. use your knowledge of the interstellar medium to discuss the relative sizes of the particles in smog, fog, and snowstorms compared to the wavelength of light.