These won't last long.
They'd better hurry!
It's still out there.
What year is this again?
It's the first time humans have seen this in the wild.
It was a $50-million wager.
They're watching for danger.
"It's a very clever device with the potential to save lives around the world."
And how to master them.
Hitchhiking a ride across the galaxies.
It could save millions of lives.
It's known as "cave disease".