On April 16, people in Shandong province observed a green object with a long golden tail flying across the sky.

4月16日，我国山东省民众观测到一个带着一条长长金色尾巴的绿色物体飞过天空。

The waves exist at a wavelength that is good for observing distant objects through gas and dust.

这种波的波长适合通过气体和尘埃观测遥远的物体。

NASA says the telescope's instruments can find infrared waves through gas and dust to observe distant objects.

NASA表示，该望远镜的仪器可以通过气体和尘埃发现红外线，以观察遥远的物体。

But they exist at a wavelength that is good for observing distant objects through gas and dust in space.

但它们存在的波长适合通过太空中的气体和尘埃来观察遥远的物体。

But researchers also observed more mass-produced objects from this time, indicating that trading was taking place.

但研究人员也观察到更多的大量生产的物品，这表明交易正在发生。

This is called the “lookback time”, and it's a cru cial tool for cosmology: by observing very distant objects, we can see the Universe when it was young!

这叫做“回溯时间”，是宇宙学的一个重要工具：通过观察非常遥远的物体，我们可以看到宇宙年轻时的样子！

This means that, as we observe celestial objects far away, we’re looking into the past, seeing what stars and galaxies looked like millions, if not billions, of years ago.

这意味着，当我们观察遥远的天体时， 我们正在回顾过去，看看恒星和星系在数百万甚至数十亿年前的样子。

The team concluded that there is no reason to think that ETNOs are not uniformly distributed, and that it's possible that observed objects only seem to be clustered because of selection bias.

该团队得出结论， 没有理由认为 ETNO 不是均匀分布的，而且观察到的物体可能只是因为选择偏差而看起来聚集在一起。

The EHT gets around this by linking together 15-20 telescopes. It uses a technique known as interferometry, in which astronomers on different continents simultaneously observe the same object, then combine the collected data on a supercomputer.

而 EHT 通过连接 15-20 个望远镜来巧妙地应对这一问题。它使用了一种被称为" 干涉测量术" 的技术，用这种技术，在不同大陆的天文学家可以同时观测同一目标，然后将收集到的数据组合在一台超级计算机上。

It was now on the wane, though every night the equatorial still afforded an opportunity of observing the singular object which would soon disappear altogether from the heavens for perhaps thousands of years.

它现在正在减弱，尽管赤道每天晚上仍然提供观察奇异物体的机会，该物体很快就会从天空中完全消失可能数千年。