The first trip to Mars will include the longest layover ever

Nobody likes layovers, but the first astronauts heading to Mars will get to experience one of the longest such experiences of their lives. They'll have to spend one year going around the moon, which will probably be a very annoying wait for the first people heading to the red planet. It's not all bad news, however, as they won't just wait for time to pass by. NASA actually wants to make sure that the round trip to Mars, a 1,000-day endeavor, is carefully planned during the time. NASA's Greg Will...