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 ...

Though lined with high-tech equipment, Orion must also sustain four humans’ lives through 10 days.

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 ...