Cosmic Star is an excellent program for those you are not ready to purchase software, and it also demonstrates some of the data entry features and other features of Sirius and Kepler.

Cosmic Star requires Windows 7, 8, 10 or 11. If you download the program, you can save it on a floppy disk (it requires 1.4 MB, which fits on an empty floppy disk) or a flash disk or burn it on a CD.

After saving the program to a media, select the Windows "Start" button, then select "Run", then enter A:\InstallCosmicStar( where A is the drive letter where the setup file is stored), and then click on "OK" and it will be installed on your hard drive. Cosmic Star is a self-explanatory program.