Can More Than One Planet Be Found in the Same

question 51

Multiple Choice

Can more than one planet be found in the same habitable zone around a single star?

• A) No, habitable zones are too small for more than one planet.
• B) No, two planet orbits would not be stable inside the same habitable zone.
• C) No, habitable zones are defined on a per-planet basis.
• D) Yes, in theory, but this has not yet been observed.
• E) Yes, and this has been observed.

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A measure of the profitability or efficiency of an investment, calculated as the ratio of net profits to the initial cost of the investment.

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A report that outlines the financial standings of a company, including assets, obligations, and owners' equity, at a given time.