Sunspots are dark spots on the sun. The Inner area is the umbra. The outer and lighter area is the penumbra. They are also very magnetic.

They are darker because they are lower in Temperature. The umbra is about 11, 000 mi. Around, the penumbra is about Double that, but they are often larger than the earth. The number of sunspots varies over a 11 year period in which the sun spots move from the top and move their way downward. As they move downward the number increases. They diminish as they spread to the 7 th degree of the solar equator.

Sunspots have been known to stay as long as a few months, but most usually stay a few weeks to only a few days. Sunspots form in groups about 10 solar degrees apart. Sunspots are storms on the sun. Electricity from the storms equals what the U. S.

will use in the next million years. The last time the sun had the peak number of on it was 1991. The magnetic force in sunspots ca Cause gases to shoot out of the sun about 200 mph. It is called a provinces. They usually last about 3 hours, but some last for a few weeks. Prominecesare about 100, 000 mi.

long and 3, 000 mi. thick. sometimes sunspots cause fiery called flares. Flares last only minutes but have the power of 10, 000, 000 to 100, 000, 000 hydrogen bombs and cause intense heat and radiation to hit earth. It can cause a blackout of communication, and cause ships and airplanes magnetic compasses to spin wildly for a short time, and they cause small particles to get in the magnetic fields in the north and south poles.

As they come through the atmosphere they make a multi-colored glow in the sky called auroras. In the north its called an aurora borealis or northern lights. In the south it is called an aurora southern lights. Sunspots affect the weather by.