Tardigrades in space

Silly astronauts. Space travel is for tardigrades!
The world’s space agencies go to great lengths to protect human beings entering the deep frozen vaccuum of space.  The prevailing belief has been that nothing could survive the ultra-cold, oxygen-deprived and radiation-intense conditions beyond Earth’s atmosphere.
Enter tardigrades: oblong invertebrates about a millimeter in length that can visit space, return to Earth, and [...]