How can photography help us see things that would otherwise go unnoticed in our everyday lives? How does photography change our perception of the world? If you have ideas about this, consider contributing your image and story to the new click! photography changes everything call for entry: "Seeing Other Worlds." While you’re at it, check out some of our click! stories that examine "seeing other worlds" for inspiration: Stewart Brand, creator of the counterculture Whole Earth Catalog, talks about how the first photograph of the entire earth (made by Apollo 8 mission to the moon in December 1968) was an impetus for global ecological and political movements; and visitor contributor Reya Mellicker notes that because human vision is subjective and quite limited in scope, that photographs allow us "to see things and people, situations and landscapes, perspectives, angles, colors and shapes that we might never have noticed on our own." To celebrate this call for entry and International Year of Astronomy 2009, we’ll also be rolling out new photos of the universe from the Chandra X-ray Observatory on Flickr Commons. And in May and June guest bloggers from across the Smithsonian will be on hand to tell us how in the world the Chandra images are actually made, and to give us a peek inside other astronomy-related photo collections across the Smithsonian. Participate in "Seeing Other Worlds" by submitting your photo and accompanying story to the click! website or the SPI Flickr Group today. We look forward to hearing from you.