Summary: Is the Earth unique in the universe or does another similar planet lay in the nearby cosmos? Is it possible that Alpha Centuri is another Earth like planet? Planets the size of earth have been hard to find, but indirect methods are arriving on line which give scientists a good survey of how many such bodies may be in the universe. How rare would it be to find life on another earth-like planet?

KEYWORDS:

• The Universe Season 3 Episode 9,
• The Universe Another Earth Online,
• Watch Episode 03x09

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