The Helios Horizon, an electric powered experimental aircraft flown by Sarasota-based test pilot and engineer Miguel Iturmendi, captured two world records for aircraft lighter than 500 kilos on June 2 ...

Small US aerospace project Helios Horizon claims to have recently broken the record for the highest-flying multi-seat electric aircraft, which it considers a step on its journey into the stratosphere.

Add Yahoo as a preferred source to see more of our stories on Google. The Helios Horizon set two world records for electric powered planes lighter than 500 kilograms, June 2 in Minden, Nevada. One ...

Earth is clearly discernible. The air is so thin–only 1.4 percent of the density at sea level–it is incapable of supporting life. It is also incapable of supporting sustained horizontal flight of an ...

On the surface, Helios Airways flight 522 seems ominous, as if it had been done on purpose. Why else would oxygen masks have been deployed with no move to descend to a breathable altitude? Why else ...