are embedded on this website and do not require anything else than the browser that you are using right now. EBooks are ideally suited for self-study.
All our EBooks have a linked Table of Contents and prev and next buttons for easy page navigation.
We are planning to soon include self-tests in our EBooks to help you to check your progress.
Click on the icon in the column "Run" in the table below to open the EBook in a separate tab.
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All resources on this site are free to use and always will be. The login is just a protective layer against mal intent of silicon based entities.
You can see the EBook "A Sense of Scale" in the public domain as an example here.
A Sense of ScaleThe Rhythmic SkyMatarikiFalling in SpaceStellar Radiation 2.1Stellar Evolution 3.0Magnitude & Distance 3.0Stellar Distance 3.0