Discover the science mission of NASA’s James Webb Space Telescope (JWST), from exoplanet atmospheres to the first light in the universe—and more!

Mar 26, 2025 · Using the unique infrared sensitivity of NASA’s James Webb Space Telescope, researchers can examine ancient galaxies to probe secrets of the early universe. ... a small fraction of the universe’s present age of 13.8 billion years old. But an unexpected feature stood out as well: one specific, distinctly bright wavelength of light, known as ...

Mar 26, 2025 · The James Webb Space Telescope is a giant leap forward in our quest to understand the Universe and our origins. Webb is examining 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.

Track noteworthy space objects in your browser in a 3D simulation of the solar system.

The James Webb Space Telescope (sometimes called Webb or JWST) is a large infrared telescope with a 6.5-meter primary mirror. Webb will be the premier observatory of the next decade, serving thousands of astronomers worldwide.

Mar 8, 2024 · Explore official, up-to-date information on current, past, and upcoming investigations by NASA’s Hubble and James Webb space telescopes.

Feb 13, 2025 · See current, upcoming and recent past observations scientists are making with the Webb Space Telescope. View details about each observation's science focus areas, the instruments used and more. View the Tool

Mar 26, 2025 · Using the unique infrared sensitivity of the NASA/ESA/CSA James Webb Space Telescope, researchers can examine ancient galaxies to probe secrets of the early Universe. Now, an international team of astronomers has identified bright hydrogen emission from a galaxy in an unexpectedly early time in the Universe’s history. The surprise finding is challenging researchers to explain how this light ...

Mar 6, 2024 · See current, upcoming and recent past observations scientists are making with the Webb Space Telescope. Use the "Observation Details + " button (right side of the window) to view each observation's science focus areas, instruments used and more.

Dec 4, 2024 · Astronomers have used the James Webb Space Telescope (JWST) to explore the strands of the Spiderweb protocluster. While the $10 billion space telescope didn't find a creepy cosmic spider at the...