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One of the reasons NEOWISE is so valuable is that it sees the sky in the thermal infrared.
NEOWISE有這樣高價值的原因之一便是它使用紅外感應觀測天空。
That means that instead of seeing the sunlight that asteroids reflect, NEOWISE sees the heat that they emit.
這意味著NEOWISE看到的是小行星輻射的熱量而不是它們反射的太陽光。
This is a vital capability since some asteroids are as dark as coal
這是一項很重要的能力，因為一些小行星像黑碳一樣暗，
and can be difficult or impossible to spot with other telescopes.
其他的探測器很難或不可能發現這類行星。
But all asteroids, light or dark, shine brightly for NEOWISE.
但所有亮或暗的行星對NEOWISE來說，都是發光的。
Astronomers are using every technique at their disposal to discover and study asteroids.
宇航員在使用一切可能的手段和技術去尋找并研究小行星。
In 2010, a historic milestone was reached.
2010年，我們達到了一個里程碑。
The community, together, discovered over 90 percent of asteroids bigger than one kilometer across
參與的組織共同發現直徑大于一公里的百分之九十以上的小行星。
objects capable of massive destruction to Earth. But the job's not done yet.
這些物體能對地球造成巨大破壞。但是工作并沒有結束。
An object 140 meters or bigger could decimate a medium-sized country.
一個140米寬或更大的物體能夠摧毀一座中型城市。
So far, we've only found 25 percent of those.
迄今為止，我們只找到了它們中的四分之一。
We must keep searching the sky for near-Earth asteroids.
我們必須繼續搜索天空，尋找近地小行星。
We are the only species able to understand calculus or build telescopes.
我們是唯一能理解微積分或制造望遠鏡的物種。
We know how to find these objects. This is our responsibility.
我們知道如何找到這些物體。這是我們的責任。
If we found a hazardous asteroid with significant early warning, we could nudge it out of the way.
如果我們發現一個極具危險性的小行星并提前發出有效警告，我們便可以把它推走。
Unlike earthquakes, hurricanes or volcanic eruptions,
不像地震，颶風或火山爆發，
an asteroid impact can be precisely predicted and prevented.
行星所產生的影響是可以被準確預測并預防的。
What we need to do now is map near-Earth space.
我們現在所需的是將地球附近的太空準確標記。
We must keep searching the sky. Thank you.
所以，我們必須繼續對天空的搜索。謝謝。
