When you analyze this light, you can figure out their distance from the Earth, and identify what they are made of, determine their chemical composition.
当你分析这些光的时候，你可以计算出它们与地球的距离，并确定它们由什么构成，查明它们的化学成分。
2
Drop Shadow with Soft Light blend mode, 100% opacity, 5px Distanceand Size.
阴影为柔光模式，100%透明度，5px的距离和的大小。
3
Scientists have come up with a much more accurate way of measuring distance - wavelengths andlight speed.