You have made an astonishing game. it seemed complex at first but I got its flow and wanted to finish it.
The mechanics are interesting and I like the upgrade system you made. I like how you mixed the mechanics and the storytelling as you progress through the game.
The gameplay has its good parts but I feel its kinda slow even though we have the timeflow buttons. When I got to the hydrogen level part the speed got really slow which would make the player bored ( i don't know if i made some mistake or forgot to add something to the rocket because i didn't have the trust yet).
And I think I found a bug. When I started some playtroughs with made upgrades and the rocket exploded at 0 meters so i had to restart a few times.
You have made a very good game!