stars,metiorite and the sun emit light,comites do both. other than that the moon and the planets reflect light
The color of light a material reflects depends on its molecular structure. For example, grass reflects green light so it appears green while it absorbs the other colors.
Yes.
a mirror and a piece of glass.
All of the electromagnetic spectrum can be reflected. White light is a combination of all colors. They all reflect, red is among them.