My idea for asteroids and comets is to redirect their orbits to collide with Mars.
This is a terra forming idea. Mars bigget flaw as I see it is that it lacks a magnetosphere and gravity strong enough to hold an atmosphere dense enough for human habitation.
If we bombard Mars with enough asteroids and comets we will add enough mass, gases and water to make it habitable. The added benefit being that we are ridding the neighborhood of NEOs.
It may take a million years unless we come across a really large nickel-iron asteroid and a big comet to drop on Mars but do we have anything better to do with asteroids, comets and Mars?
Mars has 1/8th the mass of the Earth. The mass of all the main belt asteroids adds up to a fraction of the mass of the Earth’s Moon, which is itself 1/100th the mass of the Earth. IOW, this terraforming idea won’t work.
Martian habitats for humans would/will consist of orbital stations and closed, self-sufficient buildings on the surface.
LOVE this idea.
Mars will never have a magnetosphere unless a way
can be found to create a molten metallic core.
That is the source of the magnetic field that protects
earth. Mars does not have that.....simply making it
bigger won’t change that fact.