Viewing the photos sent back from NASA’s Mars Curiosity mobile science laboratory has been exciting over the last week, but here’s one with a twist… and a roll. Open this link on an iOS device that contains a gyroscope sensor — like the iPad 2 and third-generation iPad, iPhone 4 and 4S, and fourth-generation iPod touch — and navigate the panorama by tilting and moving the device. (Bonus points for scanning the horizon while you’re sitting in a swivel chair!) follow link
Removing Photos from iPhoto
Despite iPhoto's long history, many people continue to be confused about exactly what happens when you delete a photo. There are three possibilities.
If you delete a photo from an album, book, card, calendar, or saved slideshow, the photo is merely removed from that item and remains generally available in your iPhoto library.
If, however, you delete a photo while in Events or Photos view, that act moves the photo to iPhoto's Trash. It's still available, but...
If you then empty iPhoto's Trash, all photos in it will be deleted from the iPhoto library and from your hard disk.
View Mars Panorama Using a Gyro-Enabled iOS Device