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 the homework I'll assign next week.

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

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