Panspermia

Panspermia does not require or even imply purposeful seeding of life on Earth.

However, there are some practical problems with panspermia:

  • How likely is it to send a life-bearing comet across the Solar System or across the galaxy?
  • And to have it land on Earth?
  • At the right time?
  • In the right place (like a puddle)?

    You will get to examine some of the (potential) problems with panspermia in a homework I'll assign later.

    There are lots of web pages that discuss panspermia, including the eponymous www.panspermia.org.

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