Typical asteroids are irregularly shaped. Why do astronomers today think that we have an asteroid belt and not a planet between Mars and Jupiter? Jupiter’s gravity prevented material in that zone from getting together. Why do astronomers today think that we have an asteroid belt and not a planet between Mars and Jupiter quizlet?Īlthough there are many asteroids they are widely spaced (there is lots of space between them). The average sunspot is about the size of the entire planet Earth! However sunspots come in a variety of sizes ranging from hundreds to tens of thousands of miles across (many times larger that Earth). How does sunspot size compare to the size of the Earth? How much cooler are the cool regions in the surrounding photosphere? Up to 3 000 degrees Celsius. How much cooler are the cool regions than the surrounding photosphere? … The Sun’s gravity inward and the force of gas pressure pushing outward. Sunspots appear dark because they are hotter than the surrounding gas of the photosphere. Sunspots appear dark because they are “cooler” than the surrounding gas of the photosphere. Why do sunspots appear darker than their surroundings quizlet? … Its particles can escape the Sun’s gravity because of their high energy resulting from the high temperature of the corona which in turn is a result of the coronal magnetic field. The solar wind is a stream of charged particles released from the upper atmosphere of the Sun called the corona. The strong magnetic field suppresses the release of heat into the photosphere making sunspots cooler than their surroundings. These are areas where strong magnetic field has emerged from below the solar surface. Sunspots appear as dark patches in the solar photosphere. What causes a sunspot to be cooler than the surrounding surface of the Sun?
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