Actor Matthew McConaughey poses with a model spacecraft at the premiere of the film Interstellar last month. Joel Ryan/AP hide caption
File photo of Virgin Galactic's SpaceShipTwo. Reed Saxon/AP hide caption
Madison Bumgarner and Buster Posey of the San Francisco Giants celebrate winning Game 7 of baseball's World Series against the Kansas City Royals. David J. Phillip/AP hide caption
This image from Monday shows extreme ultraviolet light that highlights the hot solar material in the sun's atmosphere. NASA/SDO hide caption
An Apple employee explains the features of the new iMac, including its Retina 5K display. Marcio Jose Sanchez/AP hide caption
Women's 200 meters respective silver and bronze medal winners from India Dutee Chand, left, and Asha Roy wave to the crowd after their race on the final day of the 2013 Asian Athletics Championship. Manjunath Kiran/AFP/Getty Images hide caption
Due to fears of Ebola, Excalibur, the pet of a nurse assistant infected with the virus in Madrid, was euthanized as a precautionary measure. AP hide caption