Simple Muzei Source providing the Astronomy Picture of the Day by NASA.
I used the Muzei Logo in App icon for this App (taken from link).
Provide your own NASA Api key by changing the resource string in api_key.xml
<resources>
<!-- NASA api key -->
<string name="nasa_api_key" translatable="false">[YOUR_OWN_API_KEY]</string>
</resources>
or just use the demo key
<resources>
<!-- NASA api key -->
<string name="nasa_api_key" translatable="false">DEMO_KEY</string>
</resources>