RESEARCH + ANDROID (3)

The Official NASA App for Android

Come explore with NASA and discover a huge collection of stunning images, videos, mission information, news, NASA TV and featured content with the new NASA App for Android.

Wikipedia

http://en.wikipedia.org

Wikipedia is a multilingual, web-based, free-content encyclopedia project based on an openly editable model. The name "Wikipedia" is a portmanteau of the words wiki (a technology for creating collaborative websites, from the Hawaiian word wiki, meaning "quick") and encyclopedia. Wikipedia's articles provide links to guide the user to related pages with additional information.

Diigo

http://www.diigo.com

If you browse or read a lot on the web, we believe you will find Diigo indispensable. Diigo is two services in one -- it is a research and collaborative research tool on the one hand, and a knowledge-sharing community and social content site on the other.