The National Science Foundation's (NFS) Science360 for iPad provides access to spectacular photographs of science and engineering images, as well as video from around the globe. In addition to this, there is a news feed which features breaking news from NSF-funded institutions. NSF provides this information, or gathers it from scientists, colleges and universities, as well as NSF science and engineering centers.
Simply tap on a picture from the gallery and you will get information on it. There are also videos on some of the tiles, in addition to the information. You can save particular tiles of interest, as well as email, twitter and Facebook it.
This is a great app to explore and learn more about areas of interest. Plus, it's free!
Compatible with iPad.