That instrument, an even more expensive space telescope, will require some means of blocking the light from a star in order to detect light reflected by its planet.
作为一个价值千金的天文望远镜，这个仪器需要一些能够掩盖星光的方法，从而使其更好的探测行星的反射光。
2
The "stauroscope", an optical instrument for studying the crystal structure of minerals under polarized light, is also no longer used.
一种用来研究偏振光下矿物的晶体结构的光学仪器，也不再被使用。
3
Scientists from the Search for Extraterrestrial Intelligence Institute (Seti) used infrared light from an instrument on the Mars Reconnaissance Orbiter to study the Nili Fossae rocks.