We have begun to find Earth-like planets around other stars. In the near future

Question

We have begun to find Earth-like planets around other stars. In the near future we will start to search these planets for signs of life. Let us assume that the full lifetime of our Sun, from its birth to its death, is 12.8 billion years. If we assume that it would take life 870 million years to become sufficiently well-established on a given planet that we could detect it from the Earth, what is the mass of the most massive star that could host a detectably habitable planet? times the mass of the Sun. One million = 1 000 000 = 1 times 10^6 One billion = 1 000 000 000 = 1 000 million = 1 times 10^9

Explanation / Answer

mass of the most massive star = (12.8 * 109)/(870 * 106)

                                                  = 14.712 times the mass of the Sun .

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