Metadata
Author: LASER-wikipedia2
Data
English[en]
However, because X-ray emissions are blocked by the Earth's atmosphere, observation of celestial X-ray sources is not possible without lifting instruments to altitudes where the X-rays can penetrate.
Chinese[zh]
但由於X射線被地球的大氣層遮擋了,因此對X射線源的觀測不能在地表進行,而需要將儀器運送到有足夠X射線能穿透的高度。