A brief tour of the weird and wonderful details in this historic space image.
On July 12, NASA shared the debut images from the fully operational James Webb Space Telescope — the most powerful space observatory ever built.
Galaxy clusters are some of the largest gravitationally bound structures in the universe, containing hundreds to thousands of individual galaxies all glommed together. The brightest spots of light at the center of the image represent some of those larger galaxies — several of which appear to be actively merging together, Gaudi said.
A cosmic magnifying glassMass is precisely what makes SMACS 0723 such a good target; this galaxy cluster is so massive, it warps the light of stars and galaxies located billions of light-years behind it . That leads to the next key feature of the JWST deep field image — gravitational lensing. That's a telltale byproduct of gravitational lensing, according to Gaudi — one galaxy, split into multiple images that curve around the same center of mass. Gaudi added that almost every warped-looking object on display here has a mirror image somewhere else in the field.
Look a bit above and to the left of that spiral, and you'll see the other dominant type of galaxy in our local universe: a fiery orange elliptical galaxy.
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