In another 500-Million to 2.3-Billion years, the Sun will reach a point at which Earth will be uninhabitable. I'm curious, but at that point (or possibly, at some point before that) would Mars ever be capable of supporting life as Earth currently does?
I don't fully understand how Earth is the way it is, with its oceans, oxygen-nitrogen-carbon dioxide atmosphere, but if it is a simple case of it being a certain distance from the sun, then by definition Mercury and Venus could have been Earth-like at some point, whereas Mars, and maybe (in several billion years) Neptune could be Earth-like too?
Yes? Or am I missing some serious pieces of information here?
Mars will be worse off than Earth by that time.
I R Scary Eyeball
16th October 2006
I could be wrong, but I was of the impression that Mars was of the wrong size and wrong composition to support anything like human life. There are other things to take into consideration like gravity and magnetism. I'm not sure if such a small planet could sustain a breathable atmosphere for example.
There are different theories that both Venus and Mars were once more Earth-like. With Venus the temp keep rising along with Carbon dioxide creating a global warming effect which trapped more and more heat which also increased the pressure.
This is what is in store for Earth if we are really creating Global warming here. If you listen to Al Gore we are causing more and more of the suns heat to be trapped on the planet.
Mars supposedly already had lots of water but for unknown reason dried up. Many think it is possible to 'jump' start life there. Starting with planet-life followed by animal-life
Voice of joy and sunshine
26th May 2003
It's not simply a matter of being a certain distance from the sun.
The most obvious problem is that Mars doesn't have a magnetosphere - a magnetosphere is necessary to stop the particles from the sun tearing important parts of your atmosphere off and throwing them into space.
Mars could, with the proper grooming, support human life. The main problem is atmosphere, which we could potentially build. I know it's dumb, but if anyone of you has read Farmer in the Sky by Heinlein, they take one of Jupiter's moons and terraform it by artificially creating an atmosphere made from greenhouse gases. While this plan has many flaws still, there is at least potential. If an atmosphere could be formed, it would trap heat, heat would melt the ice caps and whatever exists underground with the iron deposits providing water, with water, comes soil. Although soil would need to be groomed as well with base soil from earth so that farming on it would work by Mars' dust gaining essential minerals.
As I said, I know there are several holes in my argument, but I'm definitely no scientist, I simply believe that is a large possibility.
I take what n0e says way too seriously
20th November 2007
The problem with Mars s the size. It cooled much faster and lost its magnetosphere. Scientists believe Mars would've once been earth-like in the distant past.
MoreGun89;5631638...terraform it by artificially creating an atmosphere made from greenhouse gases.
Farting farms on Mars. Sounds doable. =p