Hubble Space Telescope
Orbits Earth roughly every 95 minutes at a height of about 547km (340 miles).
The primary mirrion is a single glass mirrion, 2.4m (94.5 inches) in diameter.
Legnth of mission: More than 25 years.
Mass of mirrior 828kg (1,285lbs).
Designed to be serviced by astronauts.
Placed in orbit around Earth by astronauts aboard the space shuttle Discovery.
James Webb Telescope.
Positined about 1.5 millon km (1 million miles) from Earth ar the L2 point.
Primary mirrior has 18 segments made of berylium and it is about 6.5m (21.3ft) in diameter.
Legnth of mission: 5 to 10 years (limited by fuel).
Mass of mirrior:276kg (608 lbs).
Too far from Earth to be serviced by astronauts.
Will be launched on an Ariane 5 rocket and will take a month to reach the L2 orbital point.
Both Located in space, above Earth's atmosphere
Both use a mirrior to collect and focus light
Both use solar panels to collect sunlight as a source of power
Comparing The Hubble Space Telescope to the James Webb Telescope
(author: Ty Hospelhorn)
