named hyperion , the moon 's porous surface can be seen in incredible detail in this image taken by cassini as it performed a flyby of the satellite .
the floating bath sponge shows one of saturn 's outer moons , measuring 255 by 161 miles -lrb- 410 by 260 km -rrb- .
cassini was around 38,500 miles -lrb- 62,000 km -rrb- from hyperion when the image was taken .