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The outer layers can be seen directly; the inner layers can't, to a great extent (though neutrinos from the nuclear reactions get out immediately, and can be observed). Much of what happens inside the Sun is deduction, from what is known about how matter behaves.
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How are astronomers able to explore the layers of the sun below the photosphere?
Sunspots, prominences and flares are all manifestations of magnetic fields, and these are indicators of processes going on deeper within the Sun. Also, just as earthquakes can help geologists study the Earth's interior, so can "sun-quakes" provide info about the Sun's interior.
What is it about the Sun's corona that astronomers don't understand?
the corona is much hotter than the layers of the sun that are closer to the sun's interior
What is it important for astronomers to study the sun?
SSo the astronomers can tell us what is happening to the sun. that good enough? :)
How long do astronomers estimate the sun will last before it begins to die?
Astronomers think the sun will die in 2012
What is used when astronomers measure the distance from the sun to the earth?
Parallax is the method that astronomers use to measure the distance from the sun to the earth.
Did astronomers believe that the sun was part of earth?
No.
How long have astronomers been trying to find out what the sun orbits?
For two or three hundred years, astronomers have had a fair idea the the Sun is not the center of the Universe.
Which scientist studies the sun moon and stars?
Astronomers
What is the average distance from earth to the sun for astronomers?
The average distance between the Earth and sun, in round figures, is 93 million miles. Astronomers tend to maintain the same distance from the sun that ordinary people do.
What characteristics of the sun would make it a difficult place to explore or visit?
you would burn to death you would not be able to breath
What scientist studies the function of the sun?
Astronomers study celestial bodies, helio astronomers specifically study suns.
Who studies the sun moon and stars?
Astronomers study the moon, sun, and stars.
