I'm on turn 124 and nothing has attacked me yet.
I've been keeping my pollution down-ish but not all that aggressively. No planetary appeasement to speak of. My HUD says I have 187 Planetary Rage (and that number is red), but the tooltip says I only have 53 rage, 25 from particular buildings and 25 from population.
I feel like maybe the minimum level of planetary aggression toward you might be too low. I mean, you get guard posts at the first level of the tech tree. I have a missile silo and I've yet to need guard posts.
Am I just doing a good job of not annoying the planet, or that aspect not balanced yet? Or is this still super early game and the hammer is descending?