The James Webb Space Telescope is lifted on top of its Ariane 5 launcher inside the final assembly building in French Guiana. Credit: ESA-Manuel Pedoussaut
The nearly $10 billion James Webb Space Telescope, suspended under a crane with four cables, was raised atop top an Ariane 5 launcher Saturday inside a vertical hangar in French Guiana, one of the final steps to prep the mission for liftoff this month after a quarter-century of design and development.

