That makes it the biggest known crater in our solar system and it may well be the oldest.

这使它成为太阳系中已知最大的陨石坑，也可能是最古老的陨石坑。

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Other planets in our solar system lack the oxygen atmosphere that helps explain why life exists on Earth.

我们太阳系的其他行星缺乏氧气大气层，这有助于解释为什么地球上存在生命。

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The nearly circular orbits of planets in our solar system led scientists to expect that planets around other stars would also reside in circular orbits.

在我们的太阳系中，行星的轨道几乎是圆形的，这使得科学家们预测，其他恒星周围的行星也会位于圆形轨道上。

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In our Solar System, we believe the Sun has accreted about two-and-a-half Earth-masses of rocky material.

BBC: 'Hungry' stars reveal planet presence

So, that means that there was not that violence in our solar system.

NPR: What Makes Our Solar System Special?

We think there may have been some violent events in our solar system.

NPR: What Makes Our Solar System Special?