I'm looking for a novel series, probably for teens, published in 80's-90's, which has a spaceship traveling to an alternate dimension.
One distinguishing feature is that human senses stop behaving normally in the alternate dimension, e.g. upon passing through the portal, the spaceship interior doesn't look like the spaceship interior, even if it is still the same spaceship.
I recall that the character was walking in the spaceship while holding onto handle/railing in the ship, and it stopped being metallic cold when the spaceship passed into the other dimension.