Blue galaxies contain stars, but very little dust. WebbвЂ™s MIRI image offers a kaleidoscope of colours and highlights where the dust is вЂ“ a major ingredient for star formation, and ultimately life itself. Stars are also captured with prominent diffraction spikes, as they appear brighter at shorter wavelengths. The powerful gravitational field of a galaxy cluster can bend the light rays from more distant galaxies behind it, just as a magnifying glass bends and warps images. Other features include the prominent arcs in this field. Researchers will soon begin to learn more about the galaxiesвЂ™ masses, ages, histories, and compositions. The light was stretched by the expansion of the universe to infrared wavelengths that Webb was designed to observe. We are looking back in time to within a billion years after the big bang when viewing the youngest galaxies in this field. Light from these galaxies took billions of years to reach us. WebbвЂ™s NIRCam has brought distant galaxies into sharp focus вЂ“ they have tiny, faint structures that have never been seen before, including star clusters and diffuse features. This field was also imaged by WebbвЂ™s Mid-Infrared Instrument ( MIRI), which observes mid-infrared light. Much more about this cluster will be revealed as researchers begin digging into WebbвЂ™s data. This image shows the galaxy cluster SMACS 0723 as it appeared 4.6 billion years ago, with many more galaxies in front of and behind the cluster. Researchers will continue to use Webb to take longer exposures, revealing more of our vast universe. This deep field, taken by WebbвЂ™s Near-Infrared Camera ( NIRCam), is a composite made from images at different wavelengths, totaling 12.5 hours вЂ“ achieving depths at infrared wavelengths beyond the Hubble Space TelescopeвЂ™s deepest fields, which took weeks. The combined mass of this galaxy cluster acts as a gravitational lens, magnifying more distant galaxies, including some seen when the universe was less than a billion years old. WebbвЂ™s image is approximately the size of a grain of sand held at armвЂ™s length, a tiny sliver of the vast universe.

Affectionately known as WebbвЂ™s First Deep Field, this is galaxy cluster SMACS 0723 and it is teeming with thousands of galaxies вЂ“ including the smallest, faintest objects ever observed. The NASA/ESA/CSA James Webb Space Telescope has delivered the deepest and sharpest infrared image of the distant universe so far. For the first time, Webb has also detailed chemical makeup of galaxies in the very early Universe. This sharp near-infrared view has brought out faint structures in extremely distant galaxies, for an unprecedented look at galaxies billions of years in the past. WebbвЂ™s image is approximately the size of a grain of sand held at armвЂ™s length вЂ“ and reveals thousands of galaxies in a tiny sliver of vast Universe. The NASA/ESA/CSA James Webb Space Telescope has delivered the deepest, sharpest infrared image of the distant universe so far.

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