Empty capsule landed safely under parachutes four minutes after liftoff.
SpaceX took four tries to land a rocket – this YouTuber did it on his first try.
Rocket was carrying a Dragon capsule and 7,000 pounds worth of supplies destined for the International Space Station.
Accident comes less than a month after company completes first unmanned vertical landing.
Scottish immigrant to Canada predates accepted scientific theory of rocket travel by 30 years.
Mishap caused by a fuel tank leak in the Soyuz rocket’s third stage.