On Tuesday in Houston, flight controllers at the Johnson Space Center in Texas will watch as astronaut Shannon Walker becomes the first Houston native to launch into space.
Last Space Shuttle expedition to visit International Space Station for the last time departs this week.
Airport security measures change in response to every plot, and the Christmas Day terrorist attack is no different. But use of screening technologies hasn't kept up with new terrorist methods.
Two passengers' names match those of Al Qaeda suspects, reports say. But experts caution that it's too early to tell if the link is legitimate.