/sci/ - Science & Math

>>11755527
>150-300 days in zero G to get there

Wrong, it takes 80 - 150 days, same as an average stay on ISS. Only unmanned craft will use longer trip times.

>Have you what astronauts look like when they arrive back from the space station? They can't walk and have to be carried out of the capsule.

Nope, that are just not used to walking but can walk just fine after short practice. Zero-g on bones and muscles degeneration is greatly decreased with proper exercise:

https://spacenews.com/resistive-targeted-exercise-reversed-astronauts-bone-loss-study-finds/

>>10903340
>Unless we can bring the travel time down to like 3 months Mars flight is bullshit

Good thing that we can.

>>10887478

>>9818783

>[citation needed]

see pic

>227 million km from the sun

Yes. Single BFS can land around 75,000 square meters of solar panels, using a conservative figure of 2 kg / m2. More if thin film solar cells are viable. Enough to generate several tens of GWh over the course of a martian synod.

>>8376381
I believe they include the dry weight of the 2nd stage for that 550t expendable number.

So you have 300 tons payload + 150 drymass, gives you 450 tons in orbit.

Then they also have 450 tons maximum payload in one ship, which would involve a later launch transfering more payload over + a full load of fuel.

>>8376408
image