What I do find interesting is the origin of the universe, the shape of space-time and the nature of black holes.

我真正感兴趣的是宇宙的起源、时空的形状和黑洞的性质。

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One of the leading explanations for its origin is that empty space contains some intrinsic energy that pushes the universe outward.

其起源的主要解释之一是空的空间含有一些固有的能量向外推动宇宙。

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So, in a way, you can think of these as a space analog of polar coordinates because you just use distance to the origin, and then you have to use angles to determine in which direction you're going.

也可以把这种坐标，看成是空间中的极坐标，它其实使用了，距离原点的距离，然后用角度这种标尺，来确定了方向。

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Virgin's Richard Branson has started Virgin Galactic in an attempt to sell suborbital trips to ordinary citizens, and Amazon.com 's JeffBezosJeff Bezos has started a company called Blue Origin to create a private suborbital space vehicle.

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