![\"A](\"https:\/\/www.newsbeep.com\/uk\/wp-content\/uploads\/2026\/10\/potm2609a1600x840-800x420.jpg\")
<\/p>\n<\/p>\n
The newest NASA\/ESA\/CSA James Webb Space Telescope (JWST) Picture of the Month<\/a> is among the best and most powerful examples of gravitational lensing ever seen. <\/p>\n ESA Webb describes<\/a> the newest JWST Picture of the Month as a \u201ccosmic house of mirrors,\u201d noting that the galaxies featured in the image are \u201cwarped and multiplied\u201d as though they stepped into some galactic carnival. <\/p>\n These warped galaxies, part of the galaxy cluster MACS J0454.1-0300, are extremely far from Earth. While the orange galaxies on one side of the cluster are even more distant, MACS J0454.1-0300 is five billion light-years away. The galaxies in Webb\u2019s photo are being viewed as they were when the Universe was about eight billion years old. It\u2019s a cosmic time machine. <\/p>\n Webb and other space telescopes like Hubble<\/a> can view the far distant Universe because of gravitational lensing. The same phenomenon that warps the galaxies in the frame is also what makes them visible at all. <\/p>\n Gravitational lensing occurs when a celestial body, like a galaxy cluster, is so massive that it literally bends the light traveling from behind it relative to the viewer. <\/p>\n \u201cAccording to Einstein\u2019s general theory of relativity, time and space are fused together in a quantity known as spacetime. Within this theory, massive objects cause spacetime to curve, and gravity is simply the curvature of spacetime,\u201d ESA Webb writes<\/a>. \u201cAs light travels through spacetime, the theory predicts that the path taken by the light will also be curved by an object\u2019s mass. Gravitational lensing is a dramatic and observable example of Einstein\u2019s theory in action. Extremely massive celestial bodies such as galaxy clusters cause spacetime to be significantly curved. In other words, they act as gravitational lenses.\u201d <\/p>\n Importantly, a \u201cgravitational lens\u201d also acts like a magnifying glass. It makes it possible to photograph objects that would otherwise be far too distant and faint to witness. Scientists use this phenomenon to great effect with telescopes like Webb. Paired with Webb\u2019s huge 6.5-meter primary mirror, scientists using JWST have consistently set new records for the most distant galaxies ever observed<\/a>, which is another way of saying that Webb has enabled humanity to see farther into the history of the Universe than ever before. <\/p>\n In Webb\u2019s latest Picture of the Month, another interesting phenomenon is on full display. Gravitational lensing can create double or even quadruple images. <\/p>\n \u201cUnder certain conditions, multiple images of the same galaxy can appear. It\u2019s rare to see four or more images of the same galaxy, as this requires the position of the background object and the shape of the massive foreground object to be just so. Because the requirements are so particular, this phenomenon is only seen in 10\u201320% of galaxy clusters,\u201d ESA Webb says. <\/p>\n This \u201crare configuration\u201d is visible twice in Webb\u2019s new photo. This is the first time that has ever happened with a single galaxy cluster. <\/p>\n Another interesting note: some locations in gravitationally lensed areas have been magnified by a factor of 300, which is staggering. <\/p>\n Webb is not the first space telescope to peer at MACS J0454.1-0300. The Hubble Space Telescope captured<\/a> the same area 12 years ago. Hubble\u2019s image helps illustrate just how advanced Webb\u2019s photographic capabilities are, as the two shots could hardly look more different. <\/p>\n![\"A](\"https:\/\/www.newsbeep.com\/uk\/wp-content\/uploads\/2026\/10\/potm2609a2560px-800x774.jpg\")
<\/a>\u2018Galaxies in a cosmic house of mirrors\u2019 \u2014 MACS J0454.1-0300 captured by the James Webb Space Telescope | Credit: ESA\/Webb, NASA & CSA, L. Furtak, S. Fujimoto<\/p>\n![\"\"](\"https:\/\/www.newsbeep.com\/uk\/wp-content\/uploads\/2026\/10\/1790867059_764_maxresdefault.jpg\")
<\/p>\n
![\"A](\"https:\/\/www.newsbeep.com\/uk\/wp-content\/uploads\/2026\/10\/potw1412a2560px-800x718.jpg\")
<\/a>MACS J0454.1-0300 as seen by the Hubble Space Telescope in 2014 | Credit: ESA\/Hubble & NASA, Acknowledgement: Nick Rose<\/p>\n