Go to any long pipe going down in a level you've already passed, and go down it.¿ While still in the pipe, pause and then press SELECT.¿ Then, play any level you want. Continue working your way up-you will find more hidden blocks and you will get to the Secret Exit high above the normal goal. After ringing the Midpoint Bell in the first stage of the Space Zone, jump up to find the hidden block located in front of the ringed planet.
