11 Jan '09 17:35>
I've been thinking about this quite a bit. The acceleration of the universe's expansion can only be explained by the presence of a substance we can't see. I don't have the formal mathematical background and it certainly wouldn't fit in a readable post anyway. But that's what physicists say.
String theory holds that what we call gravity is actually indentations in the fabric of space-time by celestial objects. I illustrated this point in Bosse De Nage's "Origins of Gravity" thread; I will reproduce it here. String theory holds that what we think of as empty space can be accurately modeled an infinite number of layers of infinitely thin sheets, stretched taut. if you take one of these sheets and place a bowling ball on it, the bowling ball will make an indentation. Another smaller celestial object will come along from time to time and fall into this groove; now you have a moon in orbit.
My point is this. In my reading, I've never heard it proposed that the fabric of space-time is the long sought-after dark matter. Is it possible that space is not empty, and that what we think of as space is actually the dark matter matrix of the universe? Does someone smarter and more well-versed than I care to take up the conversation at this point?
String theory holds that what we call gravity is actually indentations in the fabric of space-time by celestial objects. I illustrated this point in Bosse De Nage's "Origins of Gravity" thread; I will reproduce it here. String theory holds that what we think of as empty space can be accurately modeled an infinite number of layers of infinitely thin sheets, stretched taut. if you take one of these sheets and place a bowling ball on it, the bowling ball will make an indentation. Another smaller celestial object will come along from time to time and fall into this groove; now you have a moon in orbit.
My point is this. In my reading, I've never heard it proposed that the fabric of space-time is the long sought-after dark matter. Is it possible that space is not empty, and that what we think of as space is actually the dark matter matrix of the universe? Does someone smarter and more well-versed than I care to take up the conversation at this point?