Recent evidence suggests that when the solar system formed 4.5 billion years ago, comets had liquid cores.

最近有证据指出，45亿年前太阳系形成的时候，彗星有液态的核。

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Many scientists think our solar system formed from a giant, rotating cloud of gas and dust known as the solar nebula.

许多科学家认为太阳和太阳系的其他部分是由一团称为“太阳星云”的巨大的旋转着的气体和尘埃星云形成来的。

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Juno is designed to ferret out secrets about how the solar system formed out of the gas and dust that wasn't swept into the sun.

按照设计，“朱诺”号将会探索太阳系是如何从太阳上根本就不存在的气态灰尘中孕育而成的。

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A month later a Lebanese power-sharing system was formed to divide power under religious lines.

VOA: standard.2009.09.24

The country formed a parliamentary system of government and elections were held.

VOA: standard.2009.08.27

It's by studying the dynamics of the icebergs in the rings that scientists hope to understand how the whole Solar System formed.

BBC: Saturn's beauty and power

Abell says these fragments may also provide planetary scientists with new windows onto details about how the solar system formed and how life evolved here on Earth.

FORBES: NASA Eager To Analyze Russian Meteor Fragments

So when we collect comet dust, we're actually collecting some stardust that was, you know, four and a half billion years old and was here when the solar system formed.

NPR: Stardust Set to Deliver Comet Samples