‘This book is rich in peculiarities for the interested observer’ - The Independent

The second edition of the Oxford Dictionary of Astronomy contains over 4,300 up-to-date entries covering all aspects of astronomy. Compiled with the help of over 20 expert contributors under the editorship of renowned author and broadcaster Ian Ridpath, A Dictionary of Astronomy covers everything from space exploration and the equipment involved, to astrophysics, cosmology, and the concept of time.

The entries have been fully revised and updated for this edition, and new entries have been added to reflect the recent developments within the field of astronomy, including magnetic reconnection, Fornax cluster, luminosity density, and Akatsuki.

The dictionary also includes biographical entries on eminent astronomers, as well as worldwide coverage of observatories and telescopes. Supplementary material is included in the appendices, such as tables of Apollo lunar landing missions and the constellations, a table of planetary data, and numerous other tables and diagrams complement the entries.

NEW! With the addition of a convenient Home page, a sleeker and more intuitive visual layout, as well as innovations in the speed of searches you can delve right in faster and easier than ever!

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SEARCH TOOLS - effortlessly find words thanks to a clear, functional, and easy-to-use interface.

Intelligent search integrates several tools to match or suggest what you are looking for:
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 • Swipe-to-delete functionality in the Recent and Favorites menus.

LEARNING TOOLS - engaging features that help you further enhance your vocabulary.

 • ‘Favorites’ feature to create custom folders with lists of words from the extensive library
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 • Home screen widget provides random words at a glance
 • Split screen support for Android 7 allowing you to use the dictionary simultaneously with other apps.

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// Option A //

To download Oxford Dictionary of Astronomy mod from HappyMod.com.
You need enable the option "Unknown Sources".
1. Click on the above link to download Oxford Dictionary of Astronomy mod APK.
2. Save the file in your device Downloads folder.
3. Now tap on Install and wait for the installation to finish.
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// Option B //

To download Oxford Dictionary of Astronomy from HappyMod APP, you can follow this:
1. Open your browser and download the HappyMod APK file from HappyMod.com - the only official website of HappyMod.
2. Open Android Settings and go into Privacy or Security.
3. Tap the option to Allow Unknown Sources and enable it.
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5. Follow the directions on the screen to install it.
6. Search Oxford Dictionary of Astronomy in HappyMod App.