Assertion: telescope's limit | /r/HasProperty | a sphere
Facets:
value: with a “surface”
type: OTHER
value: of opaqueness
type: OTHER
Source sentences:
text: According to the theory of the Big Bang, the absolute observational limit to telescopes (as we know them today) is a “sphere” of opaqueness surrounding us and with a “surface” approximately 13–14 billion light-years away.