They can be visible from Earth without the aid of a telescope.
Sunspots are dark spots visible on the sun that are caused by intense magnetic activity and causes the area where the sunspots are seen to cool the temperature at that area.
Dark spots on the sun that are visible with the naked eye at sunrise/sunset are sunspots, which are cold areas caused by the sun's magnetic field.
We call them sunspots, but dark and cool are relative terms. A sunspot is dark only relative to the surrounding solar surface, but still intensely bright compared to your common household light bulb. It's cooler than the surrounding solar material, but still hot enough to vaporize a spaceship and anyone inside it in a fraction of a second.
Sun spots.
sun spots are cooler parts of the sun
the sun spots like black little spots on the sun that explode every 11 years
Saturn may or may not have Saturn spots. Only the sun has sun spots.
Sun spots.
sun spots
Sun spots are not permanent, therefore it depends.
Sunspots. Do not look at the sun directly. You will be blinded. Answer 2: They are called Sun's dark spots. The new study reports that Sun's dark spots seem to form when uranium fission lifts away a large chunk of Sun's core material along with fission fragments into nuclear fallout. A large crater formed at the site of fission appears as Sun's dark spot since no emission takes place from the site, while the remaining Sun's disk show very low intensity at Bharat Radiation, UV and visible light wavelengths.
sun spots are cold