howto steal/take technology?

[gwichman]

hi i'm an SE4 newbie.. I am having a hard time figuring out how you can take or steal technology from another player? e.g. if i could get rock colonization early, it would be a big advantage for my race. I'm at war with someone who has it. My intelligence is just barely getting started. What ways are there to take rock colonization by force? I can research it obviously.. or trade for it.. but what other ways and how exactly do you execute those ways?

thanks very much for the help!