Program by John Walker (https://github.com/Fourmilab), designed to run on Windows 95/98/Me and NT 4.0/2000/XP (https://www.fourmilab.ch/homeplanet/) and designed to be compiled with Visual C 7.0 / Visual Studio .NET. Last edit: September 16, 2006. The program includes many features including an orrery display, a sky map, and even a cuckoo clock.
Release 3.3a of Home Planet, a comprehensive astronomy / space / satellite-tracking package for Microsoft Windows 95/98/Me and Windows NT 4.0/2000/XP and above, is now available; see details at the end on how to download and install the software. Release 3.3a of Home Planet is a native 32-bit Windows application which cannot be used on Windows 3.1; if you have such a system, download Home Planet Release 2, which remains available.
Home Planet is in the public domain; it is free software. It is not shareware—you don't have to register it or pay anybody anything, and the version you download is fully functional as soon as you install it. You are free to give copies to your friends, post it on other sites, and otherwise use and distribute it in any way without permission, restriction, attribution, or compensation of any kind.
This repository contains code downloaded from https://www.fourmilab.ch/homeplanet/download/3.3a/hp_source.zip. Therefore, you may consider this repository a mirror of the original source code, under public domain according to the original terms set out on the Fourmilab website.
Experienced C programmers who wish to modify Home Planet or simply look under the hood to see how it works may download the source code. You're welcome to use this source code in any way you like, but it is absolutely unsupported—you are entirely on your own. Note that the bitmaps included in the source code archive are reduced resolution and colour gamut images prepared expressly for Home Planet. If you're looking for cloudless Earth images for other applications, you're better off starting with the higher resolution, 24 bit per pixel images available from the NASA Earth Observatory site.