@SimplyJohn Well, judging from how they are claws, most modern (and I'm assuming futuristic or alien) claws will have to be made from the same substance: keratin. It's responsible for our fingernails and toenails, hair, horse hooves, claws amongst most different species of cat and dog, antlers, also in the shells of turtles and claws of reptiles. It's also found in the feathers, beak and talons of birds, along with the quills of the porcupine.
So it's safe to say that alien claws, no matter how biologically different from Earth animals or avians, will still be structurally similar if they have claws: through keratin, either superior in hardiness and toughness to our own Earth keratin proteins, or a higher, better form.
And the only thing that matches keratin in toughness is the chitin of insect shells. So either this thing is biologically similar in make to an animal, or it's an insect. Only two of those options, alien or no, it will be biologically similar.
I'm not a nurse IRL for nothing.
Unless it's a robot.
Which I'm guessing it's not.
It survived in a no-atmosphere environment at near absolute zero temperatures. It's a safe bet that it isn't a carbon based lifeform, or at least is so alien to Earth biology that it's unlikely that it shares many chemicals in common with us.
