I don't know which of the two mods is at fault, but "Lighting Rod" tech takes Low charge Electromagnetic Pack, which should not be a science pack at all

You’re supposed to craft it on-planet. How would you craft it otherwise?

Now that I look at it it would make more sense for the fulgora drop pod tech to use the low charge EM pack, so you could research a way to get to space and get your EM packs back, on a fulgora start. I suppose as it is you can drop them on another planet to research the drop pods. - but that all doesn't concern the lighting rod research i talked about, because you can definetely get rockets going on fulgora without them if you try hard enough.

It's just weird that you have (with the space age hard mode modpack) a single "science pack" which is only used for a single tech, and then never again

That tech should already be using the low-charge science pack unless the setting for it to require space science is enabled.