Probably the amount of time it would take to terraform Mars so we can actually take a walk outside there without a suit.
Which raises another question, if we can terraform, why not keep earth habitable?.... the whole Mars thing is utter and complete bs even on its surface.
Thing is, you can't "terraform" Mars. You can try to change characteristics but this will never solve the issue Mars has in the first place.
There is a reason Mars is not habitable, and can't hold enough gasses to form a proper atmosphere, and that's because it's not heavy enough to have a gravity high enough.
Not amount of terraforming (short of creating an artificial gravitational force) is going to solve this.
That, plus Mars will have the same existential threats in the form of asteroids and other objects hitting it even if we could make it habitable with sci-fi tech. So you would want to protect it with some deflector system or another, same question, why would we ever focus that to protect Mars and not our current home to start with? And Mars second if at all.
Now, if we could only invent something to protect us from our own suns biggest farts, if that ever hits directly we be cooked anyway. Any Mars colony even more so with that shitty bit of gas calling itself a atmosphere.
Our own sun can end us with a big fart in our direction.
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u/Dahlgro 1d ago
Why 400,000 year? (I'm just curious hehe)