SpaceX has completed its first untethered leap of Starhopper-a prototype for its planned Starship vehicle. The short but important test now sets the stage for more ambitious jumps.
Starhopper rose 20 meters (65 feet) into the air, returning safely to the ground a few seconds later , reports SpaceNews. The test happened at around 1
Back in April, SpaceX conducted a series of tethered tests of the Starhopper system. Yesterday's test came one day after an aborted untethered test, which was caused by high chamber pressure.
SpaceX CEO Elon Musk tweeted a couple of videos showing the test. 
Footage showed the 9-meter-wide (30 feet) Starhopper slowly rising up and becoming completely obscured by exhaust plumes pouring out of its Raptor engine. The prototype's inaugural free-flight lasted about 10 to 15 seconds
Starhopper, with its stout, cylindrical shape, has been compared to a water tower, prompting this tweet from SpaceX CEO Elon Musk: "Starhopper flight successful. Water towers * can * fly haha !!
Video captured by Everyday Astronaut was not able to show much of the test given the tremendous amount of smoke involved, but the footage taken shortly after the test showed a significant fire in the the immediate area around the prototype craft (the action starts at 4 hours and 40 minutes). Clearly, SpaceX underestimated the extent to which the flame would engulf the launch pad.
Starhopper is a prototype of the launch system that will eventually be used for SpaceX's Starship and Super Heavy Rocket. This second-stage, fully reusable rocket is intended to replace the SpaceX's Falcon9 launch vehicle, which could happen within the next two to three years.
This next-generation launch system will deliver satellites to Earth's orbit and transport cargo and personnel to the International Space Station, the Moon, and Mars. Starship could be modified to carry 100 passengers on long-term, interplanetary flights, but it could also be used for point-to-point transportation on Earth. A flight from New York to Paris, for example, would take just 30 minutes on the Starship.
With this first free-flying leap now in the books, SpaceX would like to conduct more ambitious leaps. In a tweet Elon Musk said the next jump will be a 200 meter hop in about a week or two