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(1 point) TESS is finding planets that have orbital periods of only 25-35 days. For those...

  1. (1 point) TESS is finding planets that have orbital periods of only 25-35 days. For those planets to be in the habitable zone of their host star, what must be true about the stars relative to our Sun?
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Answer #1

The orbital period and the distance of the planet to the star is related by Kepler's Third law that is

where k is a constant.

As the orbital period is very small in compared to that of earth, the planet must be very close to their host star, more nearer than the Mercury is to the sun. In order to the planets to be in habitable zone, the energy provided by their host star should be moderate and for this the size and temperature of the host star should be very much lower than that of Sun.

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