3 ms·
>Zero-emissions long-distance aviation is absolutely possible... Provided you're not in a hurry. Solar Airship One will take 20 days to fly all the way around t
by gardenfelder 3y ago
>Zero-emissions long-distance aviation is absolutely possible... Provided you're not in a hurry. Solar Airship One will take 20 days to fly all the way around the equator, some 40,000 km (~25,000 miles), in a single zero-emissions hop.