WASHINGTON — Spanish high-altitude balloon specialist Zero 2 Infinity completed its first test flight of Bloostar, a balloon-assisted small-satellite launcher four years in development. During the ...

Zero 2 Infinity's new 3D-printed engine combustion chamber for Bloostar, a balloon-assisted rocket the company is developing. Credit: Zero 2 Infinity. Updated March 24 at 11:15 a.m. Eastern.

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Zero 2 Infinity tested a prototype of Bloostar, its balloon-lifted rocket, last March. Credit: Zero 2 Infinity. WASHINGTON — Spanish IT company Indra will assist Barcelona-based Zero 2 Infinity in ...

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WASHINGTON — Spanish startup Zero 2 Infinity will use a 3D-printed combustion chamber for the engines it is developing to power its Bloostar balloon-assisted orbital rocket. Spain's Andalusian ...