It’s a small step forward for the solar plane, dubbed the Solar Impulse, and a rather large step forward for solar aviation. The experimental solar-powered plane has just completed its first 24-hour test flight, confirming that it is capable of gathering enough juice from the sun during the day to stay in the skies all night. With this feat, the project is one step closer to achieving its goal of traveling around the world using only solar power. The Solar Impulse was able to stay in the air, recharging its depleted batteries using 12,000 solar cells, all thanks to the sun, reminding us that emissions-free air travel could be possible in the future, though it’s still a long way off. Do you think we will all be sporting solar-powered vehicles in the future?