The only difference is that Earth's tardigrades are barely visible to the naked eye, while the one found onboard the Glenn is massive. Despite the discrepancy in size, the name "tardigrade ...

When the German zoologist Ephraim Goeze first recognized, described, and named the kleiner Wasserbär (“Little Waterbear”) in 1773, he could not yet have guessed that he had found the Chuck Norris of ...