SpaceX's Starship megarocket launches on latest test flight

SpaceX's Starship megarocket roared into the skies Tuesday on its latest test flight, after a string of explosive failures that have cast doubt on its viability.

The stainless steel behemoth lifted off from the company's Starbase in southern Texas at 6:30pm local time (2330 GMT), greeted by loud cheers from engineering teams, a webcast showed.