Assertion: infrared light | /r/HasProperty | useful
Facets:
value: for nighttime monitoring
type: PURPOSE
value: especially
type: DEGREE
Source sentences:
text: Infrared light is also useful for observing the cores of active galaxies, which are often cloaked in gas and dust.
text: Astronomers have found that infrared radiation is especially useful when trying to probe areas of our universe that are surrounded by clouds of gas and dust.
text: On the other hand, infrared light is useful for nighttime monitoring (as mentioned earlier).