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originally posted by: JimOberg
originally posted by: SpaceBoyOnEarth
a reply to: Arbitrageur
If my theory and calculations are correct and Mars has 100-300mbar pressure, you dont need a space suit.
You dont need a space suit to walk on mars, neither on Mount everest. Its 300 mbar on mount everest.
You only need warm clothes and oxygen.
So how did NASA get the Russians, the Europeans, the Japanese, the Indians, and other international players, to agree to promote the same lie for half a century, but YOU saw through it?
How bad is the radiation on Mars?
m.phys.org...
As a result, over the course of the next 500 million years, Mars atmosphere was slowly stripped away by solar wind. Between the loss of its magnetic field and its atmosphere, the surface of Mars is exposed to much higher levels of radiation than Earth.
originally posted by: neutronflux
a reply to: SpaceBoyOnEarth
What physically would allow for a thicker Martian atmosphere. And why is your misconceptions concerning the Martian atmosphere not reflected in the radiation levels at its surface?
How bad is the radiation on Mars?
m.phys.org...
As a result, over the course of the next 500 million years, Mars atmosphere was slowly stripped away by solar wind. Between the loss of its magnetic field and its atmosphere, the surface of Mars is exposed to much higher levels of radiation than Earth.
In winter however, the areal extent of the cap changes dramatically with the formation of the seasonal polar cap. The seasonal cap forms when carbon dioxide and water vapour in the atmosphere condense onto the martian surface as frost. Depending on latitude, this frost layer can be up to a metre thick—problematic for surface missions at high latitudes. The northern seasonal cap extends as far south as ~53°N latitude.
medium.com...@tanyaofmars/what-is-winter-like-on-mars-c546264ef27
m.phys.org...
The incredible challenge of landing heavy payloads on Mars
It's too bad Mars is such an interesting place, because it's actually one of the most difficult places to visit in the solar system, especially if you want to bring along a lot of luggage. That planet is a graveyard of missions that didn't quite make it.
As our ambitions grow, and we think about exploring Mars with humans – maybe even future colonists – we're going to need to solve one of the biggest problems in space exploration: Successfully landing heavy payloads on the surface of Mars is really, really hard to do.
There are a bunch of challenges with Mars, including its lack of a protective magnetosphere and lower surface gravity. But one of the biggest is its thin atmosphere of carbon dioxide. If you were standing on the surface of Mars without a spacesuit, you'd freeze to death and asphyxiate from a lack of oxygen. But you'd also experience less than 1 percent the atmospheric pressure you enjoy here on Earth.
And it turns out, this thin atmosphere is making it incredibly challenging to get significant payloads safely down to the surface of the Red Planet. In fact, only 53 percent of missions to Mars have actually worked out properly. So let's talk about how missions to Mars have worked in the past, and I'll show you what the problem is.