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Water shock. (A), (B) Control worms left on Earth. (A) Representation of Earth‐only control worms, with full extension and rapid movement. (B) Close‐up image of representative Earth‐only control worm. (C), (D) Worms from space. (C) Representation of space‐exposed worms, in a state of water shock (ventrally curled and no movement). (D) Close‐up image of representative stocked space‐exposed worm (See also Videos S1 and S2.)
