Space nuts?

«Comets are thought to contain materials that have remained largely unchanged since the formation of the Solar System. They incorporate compounds that are rich in carbon, hydrogen, oxygen and nitrogen.

Intriguingly these are the elements that make up nucleic and amino acids, the essential ingredients for life as we know it; and there are some who believe comet impacts in the early years of the Solar System could have seeded the Earth with the right chemical precursors for biology.»

in Probe sweeps past 'space peanut', by Jonathan Amos, science correspondent, BBC News. 

 

And if those "some" are ever proven to be right, then I suggest Comets to be renamed to Semenets.

 

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photo: Comet Hartley 2