"We effectively use it to rinse our mouth three times and then spit out, " explained Daniel Limonadi, the Curiosity surface sampling phase lead at the US space agency's Jet Propulsion Laboratory (JPL).

BBC: Nasa's Curiosity Mars rover to scoop sand sample

In addition to its Red Star Cafe sampling site, the company is unleashing vendors with funky-looking space age backpacks to dispense Heineken beer to fans in the seats.

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