I am an extraordinary kind of energy, and I travel as tiny waves. I am very fast, but you cannot see me moving. Who am I?

I am a source of light. Light energy starts with me. Light waves move out from me and illuminate the area around me. You can see me but should never, ever look right at me. What am I?

I don't have my own light, but I shine brightly in the sky. You see me mostly at night, but sometimes I peek out during the daytime. What am I?

I am formed in places where all the light doesn't reach. Sometimes I am very dark, and sometimes only a little bit darker than what is around me. Sometimes I take a shape similar to something nearby. What am I?

I begin at a light source and travel through the air. Sometimes you can see me and sometimes you can't. I show the way light travels in a straight line. What am I?

I am the way light travels. Sometimes I am long and sometimes I am short. Sometimes I'm visible and sometimes I'm not. What am I?

I come from the sun and carry all the colors of the rainbow. What am I?

I am one of the characters in the story, and I am especially knowledgeable about light. I love to paint, and I always notice the qualities of light and shadows. I am slowly losing my vision, or sense of sight. Who am I?