Sunspots, vortices of gas associated with strong electromagnetic activity, are visible as dark spots on the surface of the Sun but have never been sighted on the Sun's poles or equator.

• Aare visible as dark spots on the surface of the Sun but have never been sighted on  
• Bare visible as dark spots that never have been sighted on the surface of the Sun  
• Cappear on the surface of the Sun as dark spots although never sighted at  
• Dappear as dark spots on the surface of the Sun, although never having been sighted at  
• Eappear as dark spots on the Sun's surface, which have never been sighted on