****Please do not use other source
than the following:
https://openstax.org/books/astronomy/pages/14-thinking-ahead
A friend of yours who has not
taken astronomy sees a meteor shower (she calls it a bunch of shooting stars).
The next day she confides in you that she was concerned that the stars in the
Big Dipper (her favorite star pattern) might be the next ones to go. How would
you put her mind at ease?
Describe the solar nebula and
outline the sequence of events within the nebula that gave rise to the
planetesimals.
How do the planets discovered so
far around other stars differ from those in our own solar system? List at least
two ways.
Explain the role of impacts in
planetary evolution, including both giant impacts and more modest ones.
Summarize the origin and evolution
of the atmospheres of Venus, Earth, and Mars.
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