Nasa is on track to launch the James Webb telescope in three years . Telescope will be able to see back to 200 million years after L2 . It will be 100 times more powerful than Hubble with mirrors 3 times larger . Astronomers hope the telescope will help further the search for alien life .
Nasa is on track to launch the James Webb telescope in three years . Telescope will be able to see back to 200 million years after the Big Bang . It will be 100 times more powerful than Hubble with mirrors 3 times larger . Astronomers hope the telescope will help further the search for alien life .