Assertion: telescope's observation | /r/HasProperty | unobtainable
Facets:
value: from telescopes on the ground
type: OTHER
Source sentences:
text: Flying at altitudes of between 39,000 to 45,000 feet (12 – 14 kilometers) and above 99 percent of the water vapor in the atmosphere, SOFIA facilitates observations that are unobtainable from telescopes on the ground.