Even the Webb telescope’s engineering test images manage to wow The data was taken to test how well the telescope could stay locked onto a target.

The James Webb Space Telescope captured a surprise selfie of its iconic gold mirror and shared images of starlight as it tests out its capabilities in space.

NASA's new deep-space observatory will soon move between hot and cold in a crucial test of its infrared viewing capabilities. The James Webb Space Telescope, which just finished its alignment ...

NASA released a test image from the James Webb Space Telescope this week as an appetizer ahead of the main course of the observatory's first big image reveal on July 12, and it's a beauty.

An engineering image acquired during testing of one of James Webb Space Telescope's instruments reveals hundreds of distant galaxies in the deepest ever glimpse into the infrared universe.

NASA's next-generation telescope, the James Webb Space Telescope, unfolded its sunshield in a series of tensioning tests in preparation for launch next year.

The James Webb Telescope is almost ready to begin scientific operations.

The James Webb Space Telescope has 2 powerful instruments that see light the human eye can’t.

The James Webb Space Telescope has crossed another milestone on the path to its long-awaited launch. NASA engineers have now completed a deployment test, unfurling the telescope’s gigantic ...