You will be given this key by the cosmonaut. It will unlock the airship's door.
This item is made by Kate and can be used to create a Blue Helena. You must also use a lemon which can be found underneath the bar at the Aralband Inn.
Temporary Code Card
This card is found in the mail-room of the Aralband Inn. You must look at it to learn the temporary access code for the gazebo.
Space Project Letter
This letter can be found in the Cosmonaut's medicine cabinet. It will tell you that about the government canceling the project.