About
Astronomy is known as the oldest of the sciences, and it will be the longest-lived because it will always have arcana that have not been penetrated." - Excerpt from the Preface
Source and licence
This work is public domain or openly licensed. The licence terms are published by the source.
How do I open it?
Use the Shopy 101 app to download it or read it in place. Anything you add to your library stays the same on every device.