Answers to Readers' Questions on Our Sun - Astronomy. Also refer to solar system, stars, planets, galaxy, Earth, universe, meteors, comets, Physical Science, Ron Kurtus, School for Champions. Copyright © Restrictions
Answers to Readers' Questions on Our Sun
The following 6 questions have been answered. They are listed according to date.
List of first 10 items
- How are satellite part protected from a solar flare?
- How long does it take light to reach Earth from the Sun?
- How large is the earth compared to the stars?
- Time it takes light to come from the Sun
- How do scientists know what is inside the sun?
- What will happen to the earth if there is no sun?
How are satellite part protected from a solar flare?
Question
July 31, 2007
I have planned to do a paper presentation on PROTECTION OF COMMUNICATION SYSTEMS FROM SOLAR FLARES. I need help from you. All i need to know is, whether the parts inside the satellites can be protected using nano compunds, etc.? Or if you have any idea, please let me know.
Thank You.
Karthik - India
14139
Answer
Solar flares are storms on the surface of the Sun that send out high energy x-rays, electrons and other particles. Methods to protect against damage include extra shielding, turning off equipment to avoid the radiation from causing excessive internal currents, and rotating the satellite to face sensitive equipment away from the Sun.
How long does it take light to reach Earth from the Sun?
Question
February 28, 2007
How do you figure for "light from the sun to the Earth in minutes and seconds"?
- USA
13271
Answer
The distance between the Earth and the Sun is approximately 92,000,000 miles. Since light travels at approximately 186000 miles per second, you can calculate the time in seconds by dividing 92,000,000 by 186,000. Then convert seconds to minutes and seconds.
How large is the earth compared to the stars?
Question
March 20, 2006
How large is the earth compared to the stars?
DAMON - USA
10512
Answer
The stars are suns. Many are much larger than our Sun. The Earth is like a pea compared to a basketball in relation to our Sun.
Time it takes light to come from the Sun
Question
November 30, 2005
How long it take the light to travel from the sun to earth ?
Please show your caculated
Thank You
Kanyarat - Thailand
9158
Answer
The distance is approximately 150,000,000 km. The speed of light is about 300,000 km/sec. Since distance = speed * time, it would take 150,000,000 / 300,000 = 500 seconds.
500 / 60 = 8.3 minutes
How do scientists know what is inside the sun?
Question
September 27, 2005
How do scientists actually "know" what is inside the sun or other planets for that matter.
Trudy in Idaho
Trudy - USA
8320
Answer
Light from each element has certain characteristics unique to that element. Thus by analyzing the light from the Sun, scientists can tell what is burning on the surface, as well as fairly deep beneath the surface.
Likewise for the planets, the reflected light tells what material is on the surface. By the size and speed of the planet, they get an idea of its mass and thus its density. From that information, they guess what the planet is made of.
They don't know any of this for sure, but they get a pretty good idea and come close.
What will happen to the earth if there is no sun?
Question
September 15, 2005
What will happen to the earth if there is no sun?
Kenny - MALAYSIA
8125
Answer
The Earth would fly out into space, since there was no Sun to rotate around. It would also freeze over.
Summary
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Answers to Readers' Questions on Our Sun