The asteroids are a substantial amount of real estate, but not very large. And it's not very promising for life, since most of it consists of rock and metal, mostly rock.
小惑星も 宇宙にある膨大な土地ではありますが それほど大きくはなく あまり生活できそうもありません ほとんどが岩や金属で 特に岩が多いからです