Martians
Posted on 04/02/2025 2:35:19 AM PDT by RomanSoldier19
China's Zhurong rover has collected data that suggests that Mars may have had oceans and beaches millions of years ago.
Scientists have made an extraordinary revelation regarding Mars, suggesting that the planet may have previously harbored optimal conditions for life.
Space exploration leaders, such as billionaire Elon Musk, envision Mars as a prime location for humanity's next outpost in the cosmos due to its relatively close proximity and Earth-like qualities. Despite this, Mars currently presents harsh conditions with sub-zero temperatures, a thin atmosphere composed predominantly of carbon dioxide, and scant oxygen—posing challenges for human habitation as we know it.
(Excerpt) Read more at the-express.com ...
It’s 1/9 the gravitational force of earth. That doesn’t seem ideal.
Its lack of a magnetic field, and lack of a large moon is a deal breaker for life, even if there is water
Yep. They say earth becomes inhabitable if the temperature changes a few degrees….. and yet somehow Mars will be perfect after it is terraformed. Just stupidity.
Mars iron core already had cooled by the time Earth developed cyanobacteria. No molten iron core swirling around, no magnetosphere. No magnetosphere, no protection from cosmic and solar radiation.
I’m saying Mars never had time to develop any life. It’s the same age as the Earth, with worse conditions for life. It would go through the same 500 million year cooling process, probably accelerated.
4 billion years ago?
Earth was still a hot mess so soon after “birth”...wouldn’t Mars be similar?
38%
It’s still not enough. There isn’t enough mass in the solar system, even if we grabbed Pluto and crashed into Mars.
At best, it will be a useful planet to build things that we couldn’t on earth because of environmental concerns.
Even if Mars was warmer and even if it did have oceans, Mars has no magnetosphere because it doesn’t have a molten Iron core. No magnetosphere to protect against solar radiation means living on the surface would be impossible. Anything that tried to live on the surface would soon die of radiation poisoning. If we are ever to colonize Mars it will have to be either underground or under domes to protect against the radiation.
According to META, Mass of mars vs earth
Meta AI
Meta AI
The mass of Mars is approximately 6.4171 x 10^23 kilograms, while the mass of Earth is approximately 5.9723 x 10^24 kilograms.
So, the mass of Earth is roughly:
5.9723 x 10^24 kg (Earth) / 6.4171 x 10^23 kg (Mars) ≈ 9.3 times greater than Mars.
This significant difference in mass is one reason why Earth has a stronger gravitational pull and a more substantial atmosphere than Mars.
Unless there is something else going on, Earth’s gravity should be about 9 times greater than Mars, because the difference in mass.
How Mars Lost Its Magnetic Field—and Then Its Oceans
Chemical changes insid
https://daily.jstor.org/how-mars-lost-its-magnetic-field-and-then-its-oceans/
It’s not a linear relationship. Mars is also half the radius, so it’s surface gravity is 0.3794 earth, according to Wikipedia.
So will the moon. I read somewhere that in places the lunar regolith more than 10% titanium. Being able to strip mine titanium from the lunar surface has huge industrial implications
The formula for surface gravity is
g = GM / r²
Where M is the mass and r is the radius and G is the gravitational constant.
The gravitatational acceleration outside a planet is the same as if it was concentrated at its center of mass. The radius of Mars is much smaller and the grav field goes as the inverse square of the radius.
Shouldn’t a bigger planet then have less gravity at the same mass as a compact more planet, since you are farther from the center on a bigger planet than a smaller one?
Yes they do, or would if you could find two with the same mass and different radii.
Surely you aren’t saying that the “force of gravity” does NOT depend on the distance from the object.
It does, but also mass.
I don’t think Mars can be so compact to overcome the 9x factor of the mass of the earth to give such a high relative gravity on Mars.
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