experiment used flatworms because of their ability to regenerate parts
of their body in the event of amputation.
The researchers amputated some
of the worms and left others whole and sealed them in half-air
half-water tubes on Earth, while sending an identical set of worms into
space. The latter spent five weeks on the SpaceX Dragon spacecraft. Read more (6/14/17)
Sabella spallanzanii is a species of marine polychaete, also known as a bristle worm. The worm secretes mucus that hardens to form a stiff, sandy tube that protrudes from the sand. It has two layers of feeding tentacles that can be retracted into the tube, and one of the layers forms a distinct spiral. By