No Free Doughnuts, Even In Space: PayPal is announcing a project with SETI, aiming to solve issues around taking regular people — and commerce — into space. Here, an artist's rendering of a space hotel, from the Space Tourism Society. John Spencer/Space Tourism Society hide caption

itoggle caption John Spencer/Space Tourism Society

An artist's impression of one of the super-Earth's surrounding the star Gliese 667 about 22 light years from Earth. ESO/L. Calçada hide caption

itoggle caption ESO/L. Calçada

Before And After: These near-infrared images of Uranus show the planet as seen without adaptive optics (left) and with the technology turned on (right). Courtesy of Heidi B. Hammel and Imke de Pater hide caption

itoggle caption Courtesy of Heidi B. Hammel and Imke de Pater

Annie Glenn, Rene Carpenter, Louise Shepard, Betty Grissom, Trudy Cooper and Marjorie Slayton attend a luncheon held in their honor by the American Newspaper Women's Club on April 27, 1962, in Washington, D.C. Mercury Seven wife Josephine Schirra is not pictured. Harvey Georges/AP hide caption

itoggle caption Harvey Georges/AP

Tonight might bring the best chance to view the gamma Delphinid meteor shower in the United States since 1930, according to NASA. Here, astronomers watch the night sky for the Perseid meteor shower, in a file photo. Petar Petrov/AP hide caption

itoggle caption Petar Petrov/AP