There wasn't even a flinch. Spock had known for a little while about the destruction of his planet from Kirk and it'd been confirmed by others he'd emailed and shared dream-information with. It still was an upsetting thought and Spock wondered when that particularly nasty dream would finally come to him. "I've heard that's what happens," Spock said, rather neutrally.
He found himself looking a bit past Uhura and tried to shake away the feeling he felt. "What was Starfleet like?" he forced himself to look at her and there was a genuine sort of curiosity in his voice.