Astronomy & Space (Science & Mathematics) - September 2007

I tried reading information from wikipedia and other websites, but I don't understand much about what it's trying to say. Can some one describe Ptolemy's major contributions to astronomy in simpler terms to me? Please don't give me websites unless you truly think that they will help me understand more about Ptolemy's theories.

2007-09-18 15:07:26 · 4 answers · asked by Vampire Duck 5

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What do you need to sustain thermonuclear fusion?

Im about to write a book on future space travel(like star trek or something).the best form of propulsion would be nuclear fusion for spaceships instead of ionic, right?but how do you sustain a fusion exactly if the temp. is hot enough ,do you have to keep pumping in hydrogen? Or does it maintain itself once you have it controlled?

2007-09-18 15:00:56 · 6 answers · asked by evlangelo 2

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Did Alley Oop lead to reports of meteorite fumes making people sick?

A stinky meteorite just fell in Peru, making hundreds sick. Is this for real, or do the locals take just their comics too seriously? Alley Oop et al's Aug-Sep 2007 adventure was to save Moo from the toxic fumes of a meteorite. A pure coincindence would be mind boggling.
http://www.msnbc.msn.com/id/20838944/from/RS.3/
http://www.unitedmedia.com/comics/alleyoop/index.html

2007-09-18 14:29:00 · 3 answers · asked by Dr. R 7

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Why is the Tropics of Cancer and Capricorn 23.5 degrees North and South of the Equator?

2007-09-18 14:19:26 · 6 answers · asked by Anonymous

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Could the universe, over time, fall back into itself creating a new big bang?

I know that there is evidence showing the universe is expanding. But is there any possibility that gravity could pull all the matter back to the center causing so much heat and energy that it could create another "big bang" and this is how the universe continues to live. Never dying, ever changing to stay alive?

2007-09-18 14:03:56 · 7 answers · asked by krismister06 1

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Why does the outer levels of the galaxy move faster than the law of gravity?

How come that the outermost part of our galaxy move at a faster speed than the law of gravity.

2007-09-18 13:42:30 · 6 answers · asked by Danny 2

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How many times more massive is the Earth than its moon?

Pick one:
1. 71 times more massive.
2. 81 times more massive.
3. 38 times more massive.
4. 18 times more massive.
5. 4 times more massive.

2007-09-18 13:26:26 · 1 answers · asked by cloud75z0 1

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If you had a spaceship that worked like in the movies, where would you go?

2007-09-18 13:08:46 · 8 answers · asked by ? 2

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when is the world going to end??

2007-09-18 12:19:04 · 20 answers · asked by kikijazz 1

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If Jupiter's big, red spot is a storm like some people have said,?

...then why is it never over, and why is it always in the same location in every photo you see of Jupiter? Shouldn't it move off gradually like storms here?

2007-09-18 11:34:33 · 6 answers · asked by monemarcos 1

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Would you classify astrology as science?

2007-09-18 11:30:07 · 16 answers · asked by Anonymous

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People who believe in astrology often cite their personal experiences with valid predictions.?

They have "faith" in the astrologer's ability to predict events based on the positions of celestial objects. What is your reaction to this "faith/it works for me" argument?

2007-09-18 11:29:38 · 6 answers · asked by Anonymous

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