From Wikipedia: https://en.wikipedia.org/wiki/Tardigrade
> Tardigrades are notable for being perhaps the most durable of known organisms; they are able to survive extreme conditions that would be rapidly fatal to nearly all other known life forms. They can withstand temperature ranges from −272.222 °C (−458.000 °F) to 149 °C (300 °F), pressures about six times greater than those found in the deepest ocean trenches, ionizing radiation at doses hundreds of times higher than the lethal dose for a human, and the vacuum of outer space. They can go without food or water for more than 10 years, drying out to the point where they are 3% or less water, only to rehydrate, forage, and reproduce.
Indeed, even at their present size they are called "slow steppers".
Also, note that they don't thrive in these conditions, they're merely able to survive for a relatively long time.
Aren't they the same thing?
"Scientifically, the term "glass" is often defined in a broader sense, encompassing every solid that possesses a non-crystalline (that is, amorphous) structure at the atomic scale and that exhibits a glass transition when heated towards the liquid state."
Polystyrene is a glass, for example (https://en.m.wikipedia.org/wiki/Glass_transition)
I had a chuckle yesterday because there was an HN News story that was briefly on the front page with a title something like "95 year old smashes world 200m record". About 80% of the posts complained that the title was misleading because it was the world record for his age group. I would have thought that was self evident - did they really expect a 95 year old to break the open WR for 200m?