Clouds, though, are small water droplets, floating on air. Laundry is cotton, wool, or plastic, woven into garments. Famous Martian rock mesas known by names like the Face on Mars appear quite natural when seen more clearly, as the above recently released photo shows. Nobody knows how clouds make lightning. Nobody knows the geological history of Mars.
Nobody knows why the laundry on the bedroom chair smells like root beer.
Understanding reality brings more questions. Mystery and adventure are never far behind. The official Web site of Popular Science Magazine. Terms and Conditions of Use.