Breathtaking!!!😍 Another incredible view from the James Webb Space Telescope. The Cartwheel Galaxy, 500 million light-years away, likely owes its striking, spiraling nautilus shell shape to a collision with a smaller galaxy. 📷 NASA/ESA/CSA/STScI
The subject is the Cartwheel Galaxy, a well-known object about 500 million light-years away, and a huge oddity: unlike most other galaxies, which tend to be relatively cohesive, it has several distinct, separated structures, the appearance of which gave the unusual object its name.
Previous analyses have found that this peculiar, extremely complicated structure is likely the result of a violent interaction with another, smaller galaxy: a high-speed collision that caused literal ripples of galaxy stuff expanding outward from the point of the collision. That's the source, scientists believe, of the big ring and also the smaller, less well-defined ring you can see around the galactic center.When galaxies interact, the results are, well, cosmic.
Not only are the galaxies in question pulled apart in interesting ways, but the resulting shocks in interstellar gas can also trigger intense waves of star formation as gas is compressed, causing massive clumps to collapse under their own gravity to form the seeds of baby stars.
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