/sci/ - Science & Math

tell me how, cunt.

>>3618363

Well, it would need a massive infrastructure but it would in itself be relatively easy.

Since there is no friction in space we could simply use some rockets to give the asteroids a kick in a direction that will bring it with collision course with Mars and let gravity and inertia do the rest.

A few hundred million years is probably enough.

Can't we just keep the water frozen and melt it when we need it?

I thought Mars can't retain an atmosphere because it lost its magnetosphere, causing the little atmosphere it does have to get blown off by solar wind.

>>3618348
>>3618388
I remember reading that a fully terraformed Mars (one where a human could go outside unprotected and breathe in relative comfort) would only last for two to three hundred years before the planet's weak gravitational field let in too much radiation and everything died again.

So, any colonization of Earth would be impermanent because Earth is around a fast-burning G2V star, which will mean it's surface will not have liquid water for more than a billion years.

Hundreds of millions of years does not require tampering. And this is fully excluding future discoveries and superprojects humans might have in mind, such as creating a cylinder which spins so it doesn't fall down to Mars which can shield its atmosphere from being slowly eroded away.

As for asteroids adding mass, if we wanted to create anything near the mas/gravity of Earth, we would have to literally smoosh Venus and Mars together to produce about 0.98Gs, while in the process scattering debris from that colossal impact all over the solar system and removing any previous ice caps or permafrost layer with the impact. Not to mention the resultant planet wouldn't be round and have a solid crust for at least tens of thousands of years.

>>3618396
Yeah, this. A huge artificial magnetic field would help retaining the atmosphere much more than some extra mass.

>>3618398
Where on earth did you read that tripe? Mars receives 47% of the solar radiation Earth does. harmful ultraviolet rays and other radiation would be further blocked by a thick atmosphere since Mars' 0.37Gs means the atmosphere is less compacted under gravity, resulting in 2.5x more atmosphere to go through to harm anyone. If anything it's entirely possible you'd receive less solar radiation on the surface of a terraformed 850 millibar pressure Mars.

>>3618396
I don't know if that's true, but we could always build a bunch of huge versions of these: news.bbc.co.uk/2/hi/7706844.stm?lsm

"Only" a few hundred million years? That's as permanent as it gets.

So, any universe would be impermanent because matter does not have sufficient gravitation to hold itself together for more than a few hundred billion years.

So I was thinking to myself. Would it be possible to enhance universal gravitation by virtual mass in the universe to increase its weight?

Picture unrelated

Wasnt that picture one of the plot points of joe Haldermans Forever free?

>>3618409
I'll post the rest. Gotta ask, why did you post only the last one?

>>3618520

>>3618526

>>3618527

I'd say a couple hundred million years is enough time to figure out how to make an artificial magnetosphere and put an end to all this solar wind outgassing nonsense.

>>3618520
I just picked a random terraformed Mars image in my Sci folder.

>>3618528

>>3618553
Okay. I thought you might want to show a reverse-terraforming of mars.

why terraform mars? genetically modify organisms to build a civilization on mars, you could have solar panels and nanobots everywhere which collect energy and use algae to convert minerals into nutrients which you use to feed an intelligent conscious species of transhumans that don't need to breathe but instead have an adaption of the lungs that stores and releases oxygen into the blood chemically and periodically eats oxygen pellets or something along with carbohydrates in food, this species will mill around on the surface of mars tending to the solar panels and algae, reproducing, producing more equipment, obtaining water and other precious minerals and engaging in various other economic activities. They will be adapted to the cold and shit as well I guess.

>>3618568
Or y'know, we can have a pretty planet safe to Earth organisms. I prefer green over red to be honest.

>>3618582
>green instead of blue
fucking casual

>>3618582
>bionic eyes
>swap rgb to grb
>cheapest green mars you ever saw

>>3618589
I'd prefer slightly more land than water as Mars is a smaller planet and all. There seems to be a nice division between the Northern and Southern hemisphere in height.

>for a few hundred million years
I don't see what the problem here is.

>>3618589
Most people prefer blue, therefor they are the casuals.

Green master race reporting in.

>>3618625

hmm.. I rather enjoy the color brown..

>>3618664
Not if it's the only color you see when going outside.

Though I'd have to say that problem would be eliminated if vision augmentation ever becomes even slightly commonplace.
A majority of colonists would probably get it, since it would be extremely helpful to see infrared and ultraviolet in addition to normal spectra.