known as Arp 220, situated 250 million light-years away in the Serpens constellation. Arp 220 emits the strongest infrared radiation, which renders it a perfect objective for observation by the Webb telescope.
Arp 220, which is located closest to Earth among other ultra-luminous infrared galaxies , has a luminosity exceeding a trillion suns. As a result of the merging of two spiral galaxies about 700 million years ago, Arp 220 experienced a significant increase inArp 220 emits most of its energy in the infrared part of the spectrum, which makes it difficult to observe with traditional telescopes.
In Arp 220, the merging of two spiral galaxies has resulted in the creation of rotating, star-forming rings within each of its parent galaxy cores. These rings emit dazzling infrared light, which creates dominant diffraction spikes in the image.Additionally, a densely packed, dusty area spanning about 5,000 light-years contains approximately 200 massive star clusters, with the gas concentration in this region equivalent to that of the entire Milky Way galaxy.