Hubble Space Space Telescope
Designed to be serviced by astronauts
Mass of the mirror: 828 kg ( 1,825 lbs)
The primary mirror is asingle glass mirror, 2.4 m (94.5 inches) in diameter
Lenght of misson more than 25 years
Placed in orbit around Earth by astronauts aboard the space shuttle discovery
Orbits earth roughly every 95 minutes at the height of about 547 km (340 miles)
James WebbSpace Telescope
located to far from Earth to be serviced by astronauts
Mass of the mirror 276 kg ( 608 lbs)
Primary mirror has 18 segments made of bery llium and is about 6.5 m (21.3 ft) in diameter
Lenght of misson: 5 to 10 years( limited by fuel)
Will be lauched on an Ariane 5 rocket and will take a month to reach the L2 oribital point
positoned about 1.5 million km ( 1 million miles) from Earth at the L2 poin
Both use solar panels to collect sunlight as the source of power
Both are located in space, above Earth's
atmosphere
Both use a mirror to collect and focus light
James Webb Space Telescope and Hubble Space Telescope
(author: Ali Sher )
