Apps
Download Cosmic Roads apk
Here is where you will find any apps which I make for use by anyone who is interested. At this time the apps will be for Android devices only. The apps are free to download and use. It is up to you to know how to download and install an APK file on your device. I do not supply support service.

Cosmic Roads

I developed this app because the human mind struggles to grasp the sheer scale of our universe. Traditional solar system diagrams often depict planets unrealistically close together with exaggerated sizes for visibility. In reality, space is almost entirely empty.

To illustrate, if the Sun were scaled down to the size of a standard soccer ball (~22 cm in diameter), Earth would be a microscopic speck just 2 mm wide, floating 24 meters away. Neptune, the outermost major planet, would be a small marble located nearly 700 meters down the road!

Cosmic Road serves as a planetary-scale calculator, allowing you to map incredible astronomical distances onto any real-world path, sidewalk, or hiking trail near you. The download is an Android APK file.
This app will NOT run on Apple devices.
Copyright 2026 David G. Iadevaia Tucson
A short video description of Cosmic Road