Assertion: sun's image | /r/CapableOf | start looking at their total area
Facets:
value: on the sun’s
type: LOCATION
Source sentences:
text: Astronomers started counting sunspots around the first time a telescope was used to look skyward, but it wasn't until 1878 that images were good enough to start looking at their total area and position on the Sun’s face, giving us an idea of how they changed the Sun's brightness.