In this Sept. 16, 2014 photo provided by NASA, astronaut Jeanette Epps participates in a spacewalk training session at the Johnson Space Center in Houston. In June 2018, Epps was supposed to be the first African-American to live on the International Space Station, but on Thursday, Jan. 18, 2018, NASA announced it was pulling her off the mission for undisclosed reasons. (Robert Markowitz/NASA via AP) __________________________________________________________________________________________________________________________________________________________ NASA has bumped an astronaut off an upcoming spaceflight, a rare move for the space agency so close to launch. Astronaut Jeanette Epps was supposed to rocket away in early June, and would have...