Painted by Light: The universe paints pictures with light, so to understand what a Hubble picture can reveal about the universe, it's necessary to understand how light is emitted, absorbed and reflected by stars, gas and dust. Light can even echo like sound,illuminating different parts of a dust cloud at different times.

Masterpiece: A look at the single largest and best Hubble image ever acquired, the giant mosaic of the Orion Nebula. It's the nearest star forming region, a place where stars and planets are being born before our eyes.