PROJECT SITE:

You are here!

Official site of the design, build, test and launch of JWST.

SCIENCE SITE:

webbtelescope.org

JWST Science overview, future home of science data and images.

NASA HQ SITE:

www.nasa.gov/jwst

Overview of the spacecraft, mission and science of JWST.

JWST related content on the NASA HOME PAGE plus links to NASA’s other great activities and missions.

MISSIONS:

JWST related Missions.

MORE NASA:

News, Careers, Locations & more.


Webb Science

The James Webb Space Telescope will be a giant leap forward in our quest to understand the Universe and our origins.  The Webb will examine every phase of cosmic history: from the first luminous glows after the Big Bang to the formation of galaxies, stars, and planets to the evolution of our own solar system.  The science goals for the Webb can be grouped into four themes:

thumbnail graphic

The End of the Dark Ages: First Light and Reionization seeks to identify the first bright objects that formed in the early Universe, and follow the ionization history.

thumbnail graphic

Assembly of Galaxies will determine how galaxies and dark matter, including gas, stars, metals, physical structures (like spiral arms) and active nuclei evolved to the present day.

thumbnail graphic

The Birth of Stars and Protoplanetary Systems focuses on the birth and early development of stars and the formation of planets.

thumbnail graphic

Planetary Systems and the Origins of Life studies the physical and chemical properties of solar systems (including our own) and where the building blocks of life may be present.

The observations needed to accomplish these goals require a telescope that can study the Universe in infrared light.  For this, it needs to be cooled till it is just a few tens of degrees above Absolute Zero.  To accomplish this goal, the Webb will reside far from the Earth at the L2 region.  Why does Webb need to be at L2?

We now have a series of videos that highlight the science that will be peformed by the James Webb Space Telescope.

A detailed description of the science capabilities and instruments on Webb can be found in the Space Science Reviews paper by Gardner et. al.