This is a great mod, thank you.

I started on Gleba and was surprised to see that the rocket silo tech only requires red, green and blue science, whereas vanilla also requires the two other Nauvis techs (production and utility). Why was this changed? As far as I checked, the resources to make those science packs are attainable on Gleba. They also don't seem more annoying than military science, which being coal-bound seems like the hardest to produce en masse.

Part of me is glad I can go to space so early, this will make my Gleba run much more realistic. But if the change was made just to make the progression easier, I am not sure what to think of it.

So could you maybe expand the description of the mod to explain the changes in the tech tree for each planet and give the reasoning behind them?

Have you played Space Age without any mods yet?
This mod doesn't change the rocket silo tech at all, that's something Space Age does by itself.

If I had to guess why Wube changed it, I'd say it's probably to give people the option of getting some of the tech from the other planets before really scaling up on Nauvis, and so you actually have a reason to add onto your existing base after having left.

I have, but I have now realized my mistake: I looked up the recipe on the wiki page, which shows the recipe for 0.17.

So, facepalm, and thanks for clearing this up.

Ah, that would do it. No problem, glad you're enjoying the mod!