Science & Tech · Space · 8 hrs ago

Webb reveals how an ancient collision reshaped the Cartwheel Galaxy

Webb reveals how an ancient collision reshaped the Cartwheel Galaxy

The James Webb Space Telescope revealed the Cartwheel Galaxy in infrared light, showing its bright rings, dusty spokes and glowing center.

The galaxy lies about 500 million light-years away in the constellation Sculptor.

A high-speed collision with a smaller galaxy reshaped it hundreds of millions of years ago, though the intruder is not visible in this image.

The impact sent disturbances outward, forming an inner ring and a much larger outer ring that has been expanding for about 440 million years.

The expanding outer ring is triggering new stars as it moves into surrounding gas, while young star clusters also brighten the center.

Webb combined observations from its NIRCam and MIRI instruments to show stars and dust through a veil that obscures parts of the galaxy in visible light.

The image shows how collisions can reshape galaxies and change where stars form long after the original impact.

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