The first star to have its parallax successfully measured was in 1838.

人们在1838年第一次成功测量到恒星的视差。

The team used a method known as the " parallax effect" to measure the volcano's plume.

研使用了一种被称为“视差效应”的方法来测量火山的烟柱。

We figured this out by measuring how different astronomical objects shift relative to their background–a phenomenon called parallax.

我们通过测量不同的天相对于它们的背景如何移动来弄清楚这一点——一种称为视差的现象。

Rather, unconsciously and automatically you make estimations on how far people are in depth based on binocular disparity.

相反，你会无意识地、自动地根据双眼视差来估计人们的深度有多远。

If we want to measure their distance using parallax, we need a lot bigger baseline than the few centimeters between our eyes.

如果我们想用视差来测量他们的距离，就需要比我们两眼之间的那几厘米更大的基线。

They use a distance called the parsec (a contraction of parallax and second), based on a universal measure called the stellar parallax and equivalent to 3.26 light-years.

他们用的距离单位是“秒差距”基于一种普遍使用的、名叫恒视差的量度方法，相当于3.26光年。