If you have 0 research points generated it would say never for research times. But if you have your homeworld you should always get some research points.
"when i colonize other planets", that makes me think you mean construction times, and they are never if you don't have population in your planets
Newbie FAQ:
4.2.3 Put people on your colony ships. The colony module gives the ships some cargo space, use transfer cargo to put people on the ship so that your colony gets some population, otherwise the new colony won't build anything (Saying "Never" on construction time). (Suicide Junkie)
4.2.4 If the colony ship is currently at a planet with population, it will automatically load pop for you if you use the Colonize (C) order, or the Send Colony Ship button under Planets (F4). The latter button will not always work if the colony ship has moved. (capnq)