- NOTE - Galaxy Trek 1.0 is generally distributed as a three-file set; the file names will probably be GALAXY-1.ZIP, GALAXY-2.ZIP, and GALAXY-3.ZIP. If you did not download all three files of the set, you will not be able to run the program. BE SURE that you have ALL the files of the set before beginning. You should have downloaded close to 1,000,000 bytes all together.