Socks1000

Chosen answer: Scout ships exploring the area detected the gold on the planet and sent a report back to the nearest base or to the Psychlos' homeworld.

Phixius ★

Chosen answer: Between the book and the hideous box office take, no he is not correct. In the book, Psychlo got turned into a sun and all the other colonies tried to teleport their ore shipments home and were wiped out by the resulting explosion.

Grumpy Scot

Answer: If there were other colonies out there, they wouldn't love as much as their home planet just like earth. Besides even if there was, they've been mostly defenseless without their fleet on the homeworld and will already be on the verge of extinction.

Chosen answer: It's actually very similar to what scientists of the time thought would happen on Earth if a nuclear bomb was ever detonated. They were convinced that the entire atmosphere, being made up of several combustible gasses, would erupt in flames killing everyone on the planet. On Psychlos, their atmosphere reacted with the radiation released by the bomb. It's the reason the Psychlos could not enter the irradiated areas of Earth where the last groups of free humans lived: their breathing apparatuses would explode.

Phixius ★

Chosen answer: Yes, they have spacecraft. They can't teleport from planet to planet without and teleportation device being on the planet.

Phixius ★