'The number of these dark patches visible on the sun's surface varies from a few to several hundred'
Sunspots
SCIENCE: The number of these dark patches visible on the suns surface varies from a few to several hundred
The number of these dark patches visible on the sun's surface varies from a few to several hundred
The number of these dark patches visible on the sun's surface varies from a few to several hundred
SCIENCE
Sunspots
SCIENCE