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- J.W.S.T. took about 30 years to complete the building.- It is 1000 times more powerful than the Hubble telescope.- It has a primary mirror, scientific instruments, stabilisation flap, antenna, spacecraft bus, sunshade, and secondary mirror.- This is a 14.5 billion tool to look 13.7 billion light years into the past.- Its aim is to find the first galaxies that formed in the early universe and look through dusty clouds to see stars form planetary systems.