Another galaxy smashed through the heart of the Cartwheel Galaxy 100 million years ago, and today the Cartwheel remains one of the most powerful UV-emitting galaxies near us, as that blue outer ring shows.
Another galaxy smashed through the heart of the Cartwheel Galaxy 100 million years ago, and today the Cartwheel remains one of the most powerful UV-emitting galaxies near us, as that blue outer ring shows.
