However, as one planet exists around this star, it is possible that others will be discovered — perhaps in more habitable orbits — as observations continue.
但是，既然恒星周围存在一颗行星，那随着观测的进展，很可能会发现其他的行星——也许位于更适宜居住的轨道上。
We now know, for example, that every star in the sky likely hosts at least one planet.
举例来说，我们现在已经知道，夜空中的每一颗星星都很 有可能拥有至少一颗行星。
One planet, about the size of Mars, probably had an orbit which crosses Earth's, and eventually a collision occurred.
一个大小与火星相当，轨道可能与地球轨道交叉的行星，最终与地球发生了碰撞。
One planet, about the size of Mars, probably had an orbit which crosses Earth's, and eventually a collision occurred.
一个大小与火星相当，轨道可能与地球轨道交叉的行星，最终与地球发生了碰撞。
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