Sunspots were first observed telescopically in late 1610 by the English astronomer Thomas Harriot and Frisian astronomers Johannes and David Fabricius
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.
Dark spots on the Sun are called sunspots. (You knew that was coming, didn't you?)
Dark spots that appear on the surface of the sun are called sunspots. They are areas of reduced temperature caused by interactions with the sun's magnetic field.
They are sun spots. Sun spots are cooler than the rest of the sun. They have strong magnetic field and usually occur in groups or in pairs. When they are in pairs one sun spot usually means the north pole of a magnet while the other means the south. Sun spots can sometimes be bigger than earth. The eleven year cycle of sunspots is the number of sunspots increasing and decreasing again. Hope that answered all your questions about sun spots.
there is about over 10,000,000 sun spots on the sun
Around 1608
Samuel de Champlain, 1608
Galileo
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
Galileo discovered the sun is the center of the solar system, he improved the telescope, he proved that the moon has craters on it, he claimed Venus has phases, and he observed sun spots on the sun.
Sun spots are not permanent, therefore it depends.
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 are colder than adjacent parts of the sun.