The discovery confirms that some of the building blocks of life were delivered to the early Earth from space. Jamie Elsila of NASA's Goddard Space Flight Center says she would like to see samples returned not just from a comet's coma but from its main body, or nucleus. "There might be more complex mixtures [of amino acids] and higher levels of them in a comet nucleus," she told New Scientist.
It's not E.T.'s daddy that's gonna get us, it's the Andromeda Strain.
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