Assertion: sun's sunspot | /r/HasProperty | dark areas
Facets:
value: on the sun’s surface
type: LOCATION
value: on the photosphere
type: LOCATION
value: always
type: DEGREE
Source sentences:
text: Sunspots are dark areas on the Sun’s surface caused by magnetic variations.
text: These sunspots which can become many times bigger than the Earth are always dark because they are much cooler than the surrounding surface of the Sun itself.
text: Sunspots are dark depressions on the photosphere with a typical temperature of 4,000°C (7,000°F).
text: Sunspots are dark areas on the Sun’s surface caused by magnetic variations.