Orbital Mousetrap

Floating away in the darkness
On the last few minutes of oxygen
Suddenly the magnetic shoes
Find an unknown object
An airlock with alien language
Unknown but death close
Smart enough to open the door
The discovered container
High in some orbit
The analyzer says
Orbital live mousetrap
The cage has caught
Rockets fire
Automatically descends
To a life-sentence zoo
The smile found earlier
Wiped away forever