The great Hubble Space Telescope will have a successor. Here is a link. This will be called the James Webb Space Telescope and will be launched in 6 years time. Here is a quote from the article:
``The $4.5bn (£2.3bn) telescope will take up a position some 1.5 million km (930,000 miles) from Earth.
It will measure 24m (80ft) long by 12m (40ft) high and incorporate a hexagonal mirror 6.5m (21.3ft) in diameter, almost three times the size of Hubble's.''