By astronomical standards, that is a hair's breadth.

以天文学标准来看，这厘之差。

Intrigued, Dr Vida searched the astronomical literature for similar fireballs.

出于好奇，维达博士搜索了天文文献中出现的类似火球。

That astronomical figure is two undecillion dollars - a two followed by 36 zeros.

这一天文数字1066美元的两倍，也就数字2后面有36个数字0.

There's usually an astronomical price tag attached.

通常会有一个天文数字的标价。

They had astronomical theories but could calculate those at the turn of a handle.

他们具备天文学的理论知识，但可以通过转动把手来进行实际计算。

In the northern hemisphere, astronomical winter officially begins this year on December 21st.

在北半球，天文学上冬天从12月21日正式开始。

The annual drug bill of the Health Services is mounting to astronomical figures.

卫生部门的年度药费用快要达到了天文数字了。

Lunar eclipses are pretty common as astronomical phenomena go.

月食很常见的天文现象。

Their total total costs are astronomical, but the average cost per car is relatively low.

它们的总成本天文数字，但每辆车的平均成本相。

Other high-energy astronomical events will leave gravitational echoes, too.

其他高能量的天文现象也会向外传递引力波。

And that meant their energy had to truly be astronomical.

那意味着它们的能量必定大的无法估量的。

These were not new astronomical objects, however.

但这些并不新的天文体。

Although astronomical projects still dominate, other sciences are starting to adopt the idea.

尽管主要应用于天文学计划，其他学科也开始采用这一想法。

Mind you, not “an” astronomical unit — “the” one.

注意，不“一个”（an）天文单位，而“一”（one）。

But it's a blank cheque, basically. But the bill is going to be absolutely astronomical.

但这基本上一张空白支票。这个账单绝个天文数字。

So now seeing the Northern Lights, that is another extraordinary astronomical event.

现在看到北极光另一个非凡的天文现象。

Before Hubble, black holes were merely a concept, an unproven part of astronomical lore.

在有哈勃之前，黑洞仅仅理论上的概念，一项未经证实的天文知识。

You'd think that the late fees would be astronomical, right?

你也许认为逾期费用会高得离谱，吗？

We often use the word " astronomical" when we're talking about big numbers.

当我们在讨论很大的数字时， 我们经常用“天文数字”这个词。

Scientists call this distance one astronomical unit, or AU.

科学家们将这个距离定为天文单位，或缩写为 AU。