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Galaxies SDSS J115331 and LEDA 2073461 appear to have collided.
Republica.co.id, JAKARTA – Images from the Hubble Space Telescope this week show some optical illusions, two galaxies that appear to collide but actually overlap by chance. Located more than a billion light-years away, the pair are two spiral galaxies, one upward and one tilted, that overlap to form a unique shape.
The galaxies, named SDSS J115331 and LEDA 2073461, were captured using Hubble’s Advanced Camera for Sky Survey instrument.
“Although they appear to be colliding in this image, the alignment of the two galaxies is a coincidence and the two are not actually interacting,” the Hubble scientists wrote.
“While these two galaxies may be ships sailing at night, Hubble has captured a range of other galaxies that are actually interacting.”
Some early Hubble images of truly interacting galaxies include galaxies NGC 7469 and IC 5283, which are closer to the well-known common name Arp 298. In this pair of galaxies, a large barred spiral galaxy is slowly making its way with a smaller companion. galaxy.small
Earlier this year, Hubble reported the merger of other galaxies known as angel wings, which formed a wing-like shape. Last year’s Hubble images showed how the extreme conditions of galaxy mergers can pull galaxies into different sizes, as the spiral arms deform due to the enormous gravity involved in the interaction. When two interacting galaxies are brought closer together, this interaction causes a stream of matter to flow between them.
Finally, one of Hubble’s most impressive images of galaxy interactions is a photo of an object called NCG 1741, which contains no fewer than four dwarf galaxies within 75,000 light-years of each other. The four galaxies will merge into the space occupied by the Milky Way, and eventually, the entire cluster of galaxies is expected to eventually merge into a single galaxy.
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