1

Always idly holding on to something with one hand/foot/limb as if they were in zero G

2

Asking about the meteorite forecast when they are asking if it rains.

3

The Keratin in their nails curdles and has the coloration of pulverized pearls, the enamel to their teeth is  equally luminescent.

4

Can't handle quiet. Silence means there's a hull breach.

5

Compulsively secures loose objects.

6

Difficulty and confusion drinking anything without use of a straw.

7

When startled, spacers from old company days will call out "Mother" to ask for status reports.

8

Fixes normal clothing with duct tape just like it does with the spacesuit.

9

Discoloration and callouses at elbows, neck and knees from vac suit chafing, lubricant and degrading seal material.

10

Constant talking to themselves while doing tasks, brought on by extended time periods with minimal social contract.