Alleged black holes have been directly observed, so it's probably more likely they exist than not.
http://news.bbc.co.uk/1/hi/england/leicestershire/3787671.stm
http://news.bbc.co.uk/1/hi/sci/tech/3501313.stm
The Uchinoura Space Center in Kagoshima, Japan has launched the world's first solar sail in to orbit.
Previously only seen in science fiction, solar sails represent a fuel-free method of constant acceleration. They are the first potential extrasolar transport technology mankind has managed to fully realise.
http://www.isas.jaxa.jp/e/snews/2004/0809.shtml
This article is somewhat relevant.
It points out that our own radio signal is fading, having lasted about a hundred years, due to the increase in microwave and cable communications which are less "leaky".
In "I, Robot" Asimov was exploring the conflict between man and machine, race issues, and the the possible ways that human and artificial intelligence would interact.
I would not characterise it as "unscientific".
I'm not sure what you're talking about, but all mods have access to the User Options page.
Unless by "email" you actually mean "PM".
You're confusing me.
So in other words, "A particle in a parabolic potential well will not oscillate backwards and forwards forever, unless it's an imaginary scenario in which it does."
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