At least one supernova occurs per decade in our galaxy.

每十年至少有一颗超新星在我们的银河系中出现。

《柯林斯英汉双解大词典》

Our galaxy is so huge that dozens of lesser galaxies scamper about it, like moons orbiting a giant planet.

我们的银河系实在庞大，吸引着数十个较小的星系环绕着它奔跑，恰似环绕巨大行星旋转的卫星。

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Upwards of a billion stars in our galaxy have burnt up their internal energy sources, and so can no longer produce the heat a star needs to oppose the inward force of gravity.

在我们的星系中，超过10亿颗恒星已经耗尽了它们的内部能量来源，因此无法再产生恒星所需的热量来对抗向内的引力。

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Mr. Reid noted that: "Our galaxy probably has 4, not 2, spiral arms of gas and dust that are forming stars."

VOA: special.2009.01.20

The team made the discovery by measuring the speed at which our galaxy is moving through space.

VOA: special.2009.01.20

The new information also adds to astronomers' understanding of our galaxy's spiral arms.

VOA: special.2009.01.20

Radio astronomers have now made a new map of the radio sources near our galaxy's core.

BBC: By BBC News Online Science Editor Dr David Whitehouse

Astronomers think our galaxy contains at least 100 billion stars, and perhaps as many as 400 billion.

MSN: New Milky Way photo captures 1 billion stars

This information is expected to unlock new information about the structure, origin and evolution of our Galaxy.

BBC: A billion pixels for a billion stars