(1) JWST is the largest-ever space telescope.
(2) It is expected to be launched in 2018 following the in-depth testing.
(3) It is bigger and more powerful than NASA’s operational Hubble Space Telescope.
(4) It is an infrared telescope.
(5) It is the formal successor to the Hubble Space Telescope and the Spitzer Space Telescope. After its launch, it will be the premier observatory of the next decade.
(6) It is an international collaboration between about 17 countries including NASA, the European Space Agency (ESA) and the Canadian Space Agency (CSA).
(7) Applications:
It will help in a broad range of investigations across the fields of astronomy and cosmology.
It will help to understand the origins of the universe, the evolution of our own Solar System, search for signs of life on faraway planets.
It can also analyze the atmospheres of exoplanets that pass in front of their stars.
It will look at a large number of things in the universe including icy moons, distant exo-planets and galaxy clusters.