Fig. 3: Force–displacement curves.

a PEGDA curves; (b) PEGDA-GO in hyperg-, micro-, and Earth gravity curves; (c) E changes during 5 cycles in hyper- and microgravity; (d) Stress–strain curve in the 5th parabola, during hyper- and microgravity, including the transition between two gravities (red box). The test is stopped when a maximum force of ~6.5 N is reached.