Colored scanning electron micrograph, or SEM, of a tardigrade.

STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY

Tardigrades are hardy microscopic creatures known for their ability to withstand extreme conditions. Water bears can go years without food or water and endure extreme radiation and temperatures. From blasting off to space to being fired from a gun, they've served science in explosive ways.

Tiny, weirdly adorable creatures called tardigrades are one of the toughest organisms on...

Continue Reading 5 of the wildest experiments tardigrades have survived in the name of science