One of the top discoveries from Hubble include the age of the universe. From 1996 and 1997 images, the distance from Earth to galaxy NGC 4603 was determined to be 108 million light years. Extrapolating backward theorizes that the Big Bang happened between 9 and 14 billion years ago. In recent years the Hubble has helped make even more precise measurements.
Credit: Jeffrey Newman (UC Berkeley) and NASA)