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#Space: #galaxy NGC 474 #shells may be like #ripples in a pond, where the ongoing #collision with the spiral galaxy just above is causing #DensityWaves to ripple through the #GalacticGiant
https://t.co/XsDz8vqsOb via @apod
#Space: #galaxy NGC 474 #shells may be like #ripples in a pond, where the ongoing #collision with the spiral galaxy just above is causing #DensityWaves to ripple through the galactic giant
https://t.co/XsDz8v8RWD via @apod
#Space: #galaxy NGC 474 #shells may be like #ripples in a pond, where the ongoing #collision with the spiral galaxy just above is causing #DensityWaves to ripple through the galactic giant
https://t.co/gfBLjHixnR via @apod by #nsskorea2038