Quote:
Originally Posted by NETbilling
How do they actually find, analyze and photograph a planet 500 light years away?
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Refer to this:
http://science.howstuffworks.com/question316.htm
Gas giants, like Jupiter, are much easier to detect.
Everything will continue to improve with time, today's instruments must be very good to determine an earth object in a specified zone.
It's not uncommon to refine findings where they are off by factors or even magnitudes.
Life is probably common in the universe, complex life is probably pretty rare and there's a fair chance it kills itself before moving into space; Thank god for people like Elon Musk.