This is really a very important discovery.
I still remember the days when I was a kid and read my first books about the solar system (I actually kind of devoured them), and they said that it is not known if any planet exists outside of the solar system, simply because it is practically impossible to detect them.
That was in the late eightees. Now we have 2007, and the search for extrasolar worlds has come such a long way. Following up on the discovery of a large number of gas giants, science is now moving on towards the more interesting terrestrian planets.
I can imagine before long we will talk about planets of our surrounding solar systemss like we are used to talk about our own, and chances are that some of those planets will be able to support life.
Now only the question remains, will we ever get to those planets? Personally I don't think so, it would bend the limits of physics a bit too much
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