is there any way to take planets belonging to under lvl 20s cause i scanned a 3x gaia and when i went to take it said i couldnt due to player being under lvl 20 hes built nothing on the planet

I believe their protection goes away after 2 weeks.

A Gaia planet colonized by a player under 20 ranks?!? I have a theory that the previous owner abandoned his planet or reset his account, and the player scanned the Gaia and colonized it. Just wait until he is rank 20 or wait until 2 weeks has passed. (Maybe less because he may have started the game earlier)

Look for mouse tracks, might tell you if Kaos was there. :p I imagine there's quite a few worlds like that out there after he left the game.