* Material: Glass ceramic (Zerodur)

* Thickness: 2.4 inches (6.1 centimeters)

* Diameter: 79 inches (2.0 meters)

* Weight: 1,825 pounds (828 kilograms)

Secondary Mirror

* Material: Glass ceramic (Zerodur)

* Thickness: 1 inch (2.5 centimeters)

* Diameter: 12 inches (30 centimeters)

* Weight: 11 pounds (5 kilograms)

Optical Baffles

* Material: Aluminum and graphite composite

* Thickness: 0.5 inch (1.27 centimeters)

* Diameter: 15 feet (4.6 meters)

* Weight: 3,500 pounds (1,588 kilograms)

Solar Panels

* Material: Silicon

* Number: 6

* Size: Each panel is 10 feet by 10 feet (3 meters by 3 meters)

* Weight: Each panel weighs 200 pounds (91 kilograms)

Battery Packs

* Material: Nickel-hydrogen

* Number: 6

* Size: Each battery pack is 10 feet by 10 feet by 1 foot (3 meters by 3 meters by 0.3 meters)

* Weight: Each battery pack weighs 1,500 pounds (680 kilograms)

Spacecraft Structure

* Material: Aluminum and graphite composite

* Thickness: 0.5 inch (1.27 centimeters)

* Diameter: 17 feet (5.2 meters)

* Weight: 5,000 pounds (2,268 kilograms)

Total Weight of Hubble Space Telescope

* 24,000 pounds (10,886 kilograms)