Approximately 25 years ago astronomers began finding large numbers of planets around other stars. Describe why astronomers were astonished about these discoveries and how they upset the Solar Nebula theory of planet formation. What are the two alternate mechanisms that astronomers have come up with to explain the differences between the observations and the Solar Nebula theory.

Applications and Investigations in Earth Science (9th Edition)
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Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
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Approximately 25 years ago astronomers began finding
large numbers of planets around other stars. Describe
why astronomers were astonished about these
discoveries and how they upset the Solar Nebula theory
of planet formation.
What are the two alternate mechanisms
that astronomers have come up with to explain the
differences between the observations and the Solar Nebula
theory.
Transcribed Image Text:Approximately 25 years ago astronomers began finding large numbers of planets around other stars. Describe why astronomers were astonished about these discoveries and how they upset the Solar Nebula theory of planet formation. What are the two alternate mechanisms that astronomers have come up with to explain the differences between the observations and the Solar Nebula theory.
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