As the coronavirus spreads, NASA limits access to astronauts scheduled to fly on SpaceX's first spaceship for people

· NASA plans to fly its first astronauts, Bob Behnken and Doug Hurley, into orbit on SpaceX's Crew Dragon spaceship.
· The demonstration mission, called Demo-2, is supposed to launch sometime in April, May, or June, according NASA.
· However, the outbreak of a novel coronavirus, which the World Health Organization now...