Talk:Helios Prototype

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On 13 August 2001, it set an altitude record for a propeller-driven aircraft, reaching at 96,863 feet (29,511 m), the Earth's atomsphere at that altitude is similar to the atmosphere to Mars,

... similar to the atmophere to Mars at which altitude? --Abdull 11:04, 15 August 2006 (UTC)

lol isn't it obvious? The altitude that is mentioned in the sentence! Gfad1 13:41, 11 September 2006 (UTC)