Which New Idea Has Been Added into Our Theory of Solar

question 3

Multiple Choice

Which new idea has been added into our theory of solar system formation as a result of the discoveries of extrasolar planets?

• A) Planets can migrate from the orbits in which they are born.
• B) In addition to the categories of terrestrial and jovian, there must be an "in-between" category of planet that has the mass of a jovian planet but the composition of a terrestrial planet.
• C) In some star systems, it is possible for jovian planets to form in the inner solar system and terrestrial planets to form in the outer solar system.
• D) Some of the "exceptions to the rules" in our own solar system are likely to have been the result of giant impacts.