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Panspermia Reference Libraries

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Panspermia
2004-10-19 04:45:44

Panspermia -- Panspermia is a theory (more directly described as a hypothesis, as there is no compelling evidence yet available to support or contradict it) that suggests that the seeds of life are prevalent throughout the universe and life on Earth began by such seeds landing on Earth and propagating. The theory has origins in the ideas of Anaxagoras, a Greek philosopher. An important...

Extraterrestrial Life
2004-10-19 04:45:41

Extraterrestrial Life -- Extraterrestrial life is life beyond planet Earth (apart from humans travelling in space, and living organisms they bring along or send). There are many questions about extraterrestrial life, including: -- Does it exist? -- Where? -- What kind? -- Could there be non-carbon based life forms, e.g. life forms based on other elements like silicon (See Carbon...

Word of the Day
pawl
  • A pivoted catch designed to fall into a notch on a ratchet wheel so as to allow movement in only one direction (e.g. on a windlass or in a clock mechanism), or alternatively to move the wheel in one direction.
The word 'pawl' probably comes from a Latin word meaning 'stake'.
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