Old meets space-age in this image of the International Space Station passing over an ancient saguaro cactus at the Saguaro National Park East near Tucson, Arizona. Robert Sparks (a.k.a. @halfastro or hale-bopp37 on Flickr) captured this beautiful image on February 6, 2013. While the ISS is just over 12 years old, the saguaro seen here … Continue reading "Astrophoto: Desert Space Station"