Why Do Comets Sparkle Like Diamonds in the Sky?

Comets sparkle like diamonds because they catch the Sun’s light, just like you shine in the sunlight. When a comet comes close to Earth, its icy body starts to melt and release tiny bits of dust and gas. These bits act like little mirrors that reflect the light from the Sun, making the comet look really bright, kind of like a shiny diamond in the sky.