Thanos 'balances' the planet
Godthab Omega, massacring half the inhabitants, including the large
Luphomoid disaspora population.
During the battle, he was impressed by the courage and ingenuity of a Luphomoid child,
Nebula, and kidnapped her, making her one of his
Daughters.
It was also the first of Thanos's massacres in which
Gamora took an active part.