SpaceX's mega Starship rocket came within a second of blasting off on a test flight Thursday, but some of the engines failed to ignite, triggering a launch abort amid billowing clouds of smoke and vapour.
Elon Musk, the company's founder and CEO, said two engines will be replaced "to be confident of a good flight" before sending Starship from Texas on a space-skimming journey halfway around the world.
