NASA's Phoenix Mars Lander lands on Mars May 25

"few hours" is not good enough ElectricFetus, my goal is to allow colonists to live their lives on planet Mars, not just "few" hours.

Also, I stated the same thing, pure oxygen is way too dangerous as it explodes easily.

 

Log in or Sign up to hide all adverts.

Your not capable of reading large paragraphs are you? let me simplify it:

Pure oxygen at 14.7psi (normal pressure): not longer then 24 hour exposure, fire hazard
Pure oxygen at 4.7psi (reduced pressure): indefinite exposure is safe (in theory), not a fire hazard.

Now do you see why I response "GIYD"? Because even when I do waste the time of explaining it to you it does not sink in!

 

Log in or Sign up to hide all adverts.

I diagree with this statement here alltogether. So called "theory" is faulty.

 

Log in or Sign up to hide all adverts.

Look it up your self! Its a fact, not my opinion.

 

Quoting you ElectricFetus:
"Pure oxygen at 4.7psi (reduced pressure): indefinite exposure is safe (in theory), not a fire hazard"

please give links and proof.

 

Here's some notes from a lecture on "Basics of Spacecraft Life Support", to compare what spacefarers have been breathing:

At atmospheric pressures at or below 5 psi and under microgravity, there is no more O2 contributing to a fire (in other words no more of a fire hazard) than we have at normal surface conditions on Earth. We don't require any other gases than Oxygen for our metabolism (but the Water, CO2, methane, acetone, etc. that we exhale must be kept below problematic levels). Where other gases are added in artificial breathing (underwater or spaceflight) it isn't because of any physiological need for them. You could say that our physiology produces a surplus of CO2 and H2O (which are necessary) for our needs in a closed environment.

 

It turns out that it can't be frozen CO2 either. Dry ice under those conditions would disappear too fast.

 

So Mercury, Gemini, and Apollo had Oxygen 100% at 5 psi.

But those missions were way too short to actually have humans breath only oxygen for their lifetime...

I do understand that fire hazard will no longer be there.

 

Lets look at the mechanics of it: more oxygen makes fire burn more right? How much oxygen is in the air, 21% or a partial pressure of .21 bar, if you were in an atmosphere of .21 bar of pure oxygen the amount of oxygen reaching the fire would be the same as in normal air (not including the properties of nitrogen of course). Although .21 bar atmosphere of pure oxygen (3.1psi) will to your lungs look oxygen depleted, to your lungs it would seem like 2km above sea level because the partial pressure of CO2 and water vapor in your lungs will drop the oxygen partial pressure, the math though comes out that at 4.7psi pure oxygen your lungs should feel the oxygen partial pressure of sea level air (actually a little lower).

 

Doesn't look like anyone has posted this yet. Nasa has confirmed that the white stuff is water ice.

http://www.nasa.gov/mission_pages/phoenix/news/phoenix-20080620.html

 

"NASA's Phoenix Mars Lander repositioned its robotic arm slightly Tuesday and is now poised to deliver Martian soil to its wet chemistry laboratory."

Read more

 

Didn't catch that news release, thanks for posting it!

Please Register or Log in to view the hidden image!

 

"Flabbergasted" NASA scientists said on Thursday that first analysis of Martian soil appeared to contain the requirements to support life.

Read more

 

like what? water? lol

Please Register or Log in to view the hidden image!

what a bunch of naive dopes.

Please Register or Log in to view the hidden image!

 

You might be able to grow asparagus in it really well.

 

what...just water? no nutrients? as far as I remember martian soil is full of oxides with magnesium, silicon, aluminum...

 

http://www.nasa.gov/mission_pages/phoenix/news/phoenix-20080626.html
From the horse's mouth.

 

Quoting:

 

To Mars, Again!

WASHINGTON -- NASA has submitted funding proposals for a new Mars mission, scheduled to launch in 2012. The mission will entail a new Mars lander called the Advanced Series Polymorphic Asparagus Research Automated Growing Unit Seedfarm, or ASPARAGUS, and is expected to grow several varieties of asparagus in martian soil.

"[We] might be able to grow asparagus in it really well... It is very exciting for us" says Sam Kounaves, mission planner for the new endevour.

The lander will be expected to gather soil and deposit it into a 'grow-op' like container, where asparagus seeds will be added to the mix. "We just don't know what will happen after that, it will be very exciting to watch the developments unfold over subsequent weeks." he adds.

Included in the lander will be a CD filled with asparagus recipies for future astronauts of the first manned Mars mission, planned for 2050. "The CD will contain dozens of recipies all featuring asparagus as the main ingredient. Things like boiled asparagus, steamed asparagus, steam boiled asparagus, fried asparagus, and even just plain asparagus!" says Angela Schmidt, the mission's asparagus habilitation expert.

The $480 million project is expected to be greenlit later this year.

 

I wonder when NASA will send a robotic craft to Mars , have it retrieve some samples, then have it return to Earth? Anyone know when that is scheduled?:shrug: