Assertion: extraterrestrial biosphere | /r/HasProperty | within 100 light-years
Facets:
value: from the earth
type: LOCATION
Source sentences:
text: Based on observations by the Kepler Space Telescope team, it has been calculated that provided the probability of abiogenesis is higher than 1 to 1000, the closest alien biosphere should be within 100 light-years from the Earth.