NASA's James Webb Space Telescope will peer into the past to a time when new stars and developing galaxies were first beginning to form, measuring and capturing images and spectra of galaxies that formed billions of years ago.
The Webb Telescope will use its superb angular resolution and near-infrared instruments to discover and study planetary systems similar to our own, analyze the molecular composition of extrasolar planets' atmospheres, and directly image Jupiter-size planets orbiting nearby stars.
By extending our knowledge of the cosmos, the Webb Telescope will play an important role in our quest to answer the compelling questions "How did we get here?" and "Are we alone?"
Identified as a top priority for astronomy and astrophysics by the National Research Council, the Webb Telescope is a key program for NASA and the scientific community and is central to the nation's ground- and space-based astrophysics program.