A preauthorization is not a guarantee of benefits or payment. Predetermination. is a voluntary, written request for review of. treatment or services and includes services that may be considered. not medically necessary; investigational, experimental or unproven; or.
The Mercury Project suffered some early setbacks, however, and on April 12, 1961, Soviet cosmonaut Yuri Gagarin orbited Earth in the worldâs first manned space flight. Less than one month later, on May 5, astronaut Alan Shepard was successfully launched into space on a suborbital flight. On February 20, 1962, in a major step for the U.S. space program, John Glenn became the first American to orbit Earth.
NASA: Longest space mission for U.S. astronaut set for 2015. Capt. Scott Kelly, a veteran astronaut, will set the record for the longest single space mission for an American, NASA announced Monday. Kelly and Roscosmos cosmonaut Mikhail Kornienko will embark on a one-year mission to the International Space Station in 2015.