In July last year, scientists shot another car to Mars from Earth. It touched down a few days ago and, for the first time, provided video of the descent and audio from the planet. There is also a helicopter aboard, which will apparently be flown near the rover within the next month. A little over a century ago, humans first took to the air on Earth; by the end of March, if all goes to plan, humans will remotely pilot an aircraft in another planet’s atmosphere. Incredible.