DaWoody

The Astronomy Picture Of the Day plugin fetches data from the NASA open API and specifically data from Astronomy Picture Of the Day (APOD). The data can then be presented within posts/pages through the use of short-codes added to the editor in text-mode. The data is fetched through javascript AJAX calls, and stored within the browser as a cookie for caching purposes. 
Currently the plugin uses the public <code>DEMO_KEY</code> for requests towards the open API, and as mentioned then stores the data as cookies for the next 24 hours, this to lessen the request load on the API and also possibly help the wordpress user to a smoother experience.
How to use: 
After activating the plugin, go to your post/page, go to editor mode, and then either add <code>[astronomy-picture-of-the-day]</code> or <code>[astronomy-picture-of-the-day-hd]</code> to generate a html block consisting of a container div, with a title, the apod image and its explanation. 
All elements receive css classes so they can be styled independently by the WordPress developer. 
Within the admin interface the specific <code>css</code> classes that gets added are mentioned.

Astronomy Picture Of the Day

A plugin that fetches data from NASA's open API regarding the Astronomy Picture Of the Day to be used within posts/pages

ianwww

This simple plugin will grab the NASA Astronomy Picture of the Day and create a new post with it. You can choose which username it will post under as well as whether or not to go ahead and publish on creation.
Using this plugin will required you get an API Key from NASA, which is very easy to get. This does not utilize an RSS feed and does not post duplicates.

NASA Picture of the Day

Allow your readers to enjoy NASA's Astronomy Picture of the Day on your blog with this easy to use and setup plugin.

Astronomy Picture Of the Day vs NASA Picture of the Day