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0 pointsstephengillie13y ago0 comments

Can it take off from Mars? In another HN thread a month ago, we discussed how Mars' atmosphere is so thin that a Cessna would need 747 wings and near Mach 1 velocity to take off.

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wololo13y ago

fyi: https://news.ycombinator.com/item?id=4261806, https://news.ycombinator.com/item?id=4608595

ricardobeat13y ago

Rockets are propelled by their own exhaust.

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0 pointsstephengillie13y ago0 comments

Can it take off from Mars? In another HN thread a month ago, we discussed how Mars' atmosphere is so thin that a Cessna would need 747 wings and near Mach 1 velocity to take off.

0 comments

wololo13y ago

fyi: https://news.ycombinator.com/item?id=4261806, https://news.ycombinator.com/item?id=4608595

ricardobeat13y ago

Rockets are propelled by their own exhaust.

j / k navigate · click thread line to collapse