Suppose Earth Existed in a Solar System Containing Two Stars

question 77

Multiple Choice

Suppose Earth existed in a solar system containing two stars, relatively close together. What major change would result from such an arrangement compared to the situation at present?

• A) No substantial change would result.
• B) There are no stable orbits for such a system, so Earth would be doomed to fall into one of the stars.
• C) We would be in an orbit in which one star or the other would always be in the sky, and, without a night, our biosphere would have developed differently.
• D) We would have to be in a highly elliptical orbit giving us extremes in temperature.

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