It looked more like a satellite television dish than a weapon. But the antenna could fire enough electromagnetic energy to fry the satellite 22,000 miles away. That was not the plan for tonight’s ...

What happens when you use a SpaceX Falcon 9 rocket to launch Northrop Grumman’s Cygnus supply ship? A record-setting resupply mission to the International Space Station. The first flight of Northrop’s ...

When fire breaks out in the low-gravity, high-stakes conditions inside spacecraft or space stations, it behaves very differently than back here on Earth. So, as humans aim to set foot on Mars in the ...

It takes a beam of light a single day to travel 16.1 billion miles, a distance known as a light-day. It'll take Voyager 1, the American spacecraft moving at 10.6 miles per second, more than 49 years ...

While many in the industry were at first skeptical of NASA’s goal to put resupply flights to the International Space Station in the hands of commercial operators, the results speak for themselves.