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We're located close enough to the galaxy's center to have the heavier elements necessary for a rocky planet and life.

We're located far enough away from the galaxy's center that we rarely receive fatal radiation from supernovae or other stellar reactions near the denser parts of the galaxy.

We're located in a region sparse enough that we're not constantly bombarded by comets and other space debris.

Specifically, we're located on the edge of the Orion spur of the galaxy. It's a group of stars separate from one of the four main arms of the galaxy.

I'd add the caveat that our knowledge of our galaxy is still pretty young. There's still some debate over what constitutes a 'habitable zone' for life to develop on a planet.

I'd also add that all things are temporary. Our galaxy is on a probable collision course with the Andromeda galaxy, so the environment will be drastically different in around 3 to 4 billion years (of course the Sun will transition to a red giant in around 5 billion years, so things were going to change drastically in any event).

2007-02-27 03:13:02 · answer #1 · answered by Bob G 6 · 0 0

well, we're conveniently located on the outer rim of a spiral arm where, fortunately, we're relatively out of the way for many large asteroids and highly volatile areas of rapid star formation. otherwise, we might have been torn apart by the elements

2007-02-27 10:06:28 · answer #2 · answered by izaboe 5 · 0 0

every moment is special.

2007-02-27 10:06:44 · answer #3 · answered by Cant stop thinking 4 · 0 0

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