The solar system has more resources than human beings could use in a million years, but accessing them is the problem.
Asteroid mining and construction in orbit may prove to be the best way to colonize space rather than launching heavy payloads from Earth.
Reaching the near-Earth asteroids would not be too difficult if we wait until we pass close to them.
It's thought to be the remains of a destroyed planet, or fragments that never coalesced into a planet in the first place.
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