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The same amount they need on earth. just because theyre in a different place doesnt mean their needs change. Space99boy: Actually they need slightly more because you grow more in space because there is no gravity.

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14y ago
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16y ago

depends on the size of the tank.

Oxygen alone is not enough, carbon dioxide levels will kill you while there is still breathable oxygen in the air

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14y ago

Current EVA max duration is about 16 hours, but that includes a 10-20% reservoir for emergencies, so EVAs are kept to about 12 hrs.

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14y ago

for as long as they need to as long as they take of the hat that goes over their face at least one a day

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12y ago

depends how much air he/she takes in before he/she takes her/his helmet off.

but usually about 5 seconds

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14y ago

most only stay up there for a few months.

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9y ago

They don't

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11y ago

none

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12y ago

48 hours

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Q: How long can an astronaut survive with an oxygen tank?
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Get the oxygen tank!!!!!


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What are the possible ways to stay in space for a long period of time?

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What are possible ways to stay for a long period of time in space?

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