Assertion: new supernova | /r/HasProperty | spotted in at least 20 years
Facets:
value: from earth
type: LOCATION
Source sentences:
text: At 12 million light-years away, a new supernova that suddenly appeared in a nearby galaxy this week is the closest star explosion to be spotted from Earth in at least 20 years, so it's no surprise that it has captured the attention of stargazers.