Webb, combining data from its Near-Infrared Camera (NIRCam) with its Mid-Infrared Instrument (MIRI), revealed sharp, detailed views of the Hubble Ultra Deep Field. Originally assembled from Hubble observations from 2003 to 2004, the Ultra Deep Field showcases over 10,000 galaxies, some of which date back to less than a billion years after the Big Bang.
Webb’s latest look at the field focuses on the MIRI Deep Imaging Survey (MIDIS) region, using MIRI’s shortest-wavelength filter. The observation lasted nearly 100 hours, marking Webb’s longest observation of an extragalactic field in one filter. In this small patch of sky observed, Webb revealed more than 2,500 sources, including hundreds of extremely red galaxies. Many are likely huge galaxies buried in cosmic dust or evolved galaxies with mature stars that formed early in the Universe’s history.
The image assigned colors based on infrared wavelengths, revealing distinct galaxy features. Orange and red indicate longer mid-infrared wavelengths, highlighting galaxies with features such as heavy dust, abundant star formation, or active galactic nuclei (AGN). Small greenish-white galaxies appear more distant due to redshift, making their light fall into the mid-infrared ranges. Most other galaxies shine brightest in shorter near-infrared wavelengths, shown as blue and cyan, as they lack mid-infrared enhancements.
Webb’s view of the Hubble Ultra Deep Field is one of the deepest views of the Universe ever obtained. It is providing more insights into the formation of the first cosmic structures.
I have always been fascinated by technology and digital devices my entire life and even got addicted to it. I have always marveled at the intricacy of even the simplest digital devices and systems around us. I have been writing and publishing articles online for about 6 years now, just about a year ago, I found myself lost in the marvel of smartphones and laptops we have in our hands every day. I developed a passion for learning about new devices and technologies that come with them and at some point, I asked myself, “Why not get into writing tech articles?” It is useless to say I followed up the idea — it is evident. I am an open-minded individual who derives an infinite amount of joy from researching and discovering new information, I believe there is so much to learn and such a short life to live, so I put my time to good use — learning new things. I am a ‘bookworm’ of the internet and digital devices. When I am not writing, you will find me on my devices still, I do explore and admire the beauty of nature and creatures. I am a fast learner and quickly adapt to changes, always looking forward to new adventures.