NASA is quietly racing to close a dangerous gap in its launch security, warning that Kennedy Space Center needs a dedicated system to spot drones before one wanders into the wrong airspace at the wrong moment.

As the cloud cleared, Air Force bombers dropped in to gather air samples. Researchers hoped that the radioactive fallout would travel away from inhabited parts of Nevada. But the explosion instead whisked a radioactive cloud more than 200 miles southwest to Los Angeles.

The Orion spacecraft and Space Launch System rocket have been attached at the hip for the better part of two decades. The big rocket lifts, the smaller spacecraft flies, and Congress keeps the money rolling in. But now there are signs that the twain may ...

On 1970, NASA cancelled the Apollo 20 moon mission. This came just six months after Apollo 11 astronauts Buzz Aldrin and Neil Armstrong became the first people to ever set foot on the moon. Instead of launching another crew of astronauts to the moon,