Editorial: The lesson of a little helicopter on Mars

The little helicopter weighs only 4 pounds, and its first flight lasted a mere 30 seconds and reached an altitude of only 10 feet. But it did so on Mars. Stop and wonder about that for a moment. For the first time, humankind has achieved powered flight on another planet. A feat that would be nothing for a 10-year-old child to accomplish with a backyard drone takes on new meaning when it happens 178 million miles away on a planet with 1% of Earth’s atmosphere.