As more satellites, telescopes, and other spacecraft are built to be repairable, it will take reliable trajectories for ...

Funded by the Federal Aviation Administration, the United States made the transponder-based system mandatory for large airliners in 1993, and it is now common on all manner of com ...

while the approaching JAL crew failed to spot the Coast Guard aircraft’s anti-collision lights. For the first time, the report revealed that 15 seconds before the accident, a controller from a ...