Aerden (aerden) wrote,

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Space Curvature and Spiral Galaxies

I was watching a show on the Science Channel last night in which they explained Einstein's theory of General Relativity. Einstein's notion was that space is curved, and the greater the mass/gravity of a body, the greater the degree of curvature around it. This theory came into being after astronomers discovered that Mercury's orbit shifts around the Sun like a Spirograph design.

It occurred to me last night that perhaps spiral galaxies, by their shape alone, prove this theory--because, presuming that space is curved, planets don't orbit the sun; they very slowly spiral in toward it. So I'd bet one could theorize that there are massive black holes at the centers of all spiral galaxies; that's why they have spiral shapes. Globular clusters probably don't.


Website Geekery: Check out the website for Houston Eye Associates. Run your mouse over the eye specialty links running down the left side of the screen and watch how the doctors' faces are obscured or displayed according to which specialty your mouse is over. That is really neat!

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