If there is a star with a planetary system like ours, but this star many times bigger than our sun, does that mean the habitable zone for that star is greater, or is it just all about the distance?
Basically, are the habitable zones dependent to size and of each star or distance?
What about energy, we know that there are stars that are much more brighter and hotter than our sun, does this affects a solar system habitable zone?Are the scientific calculations for the habitable zone based on just our star the sun?No, astronomers can calculate the habitable zone for any star if they know its luminosity. By the way, Ken is completely wrong to say that the habitable zones of Red Giants and larger stars are closer in than with the Sun. Red Giants may have cooler surface temperatures, but they are many times more luminous than the Sun because they are so big. Therefore, their habitable zones will be farther out. Habitable zones are not fixed, they migrate as a star ages. When our Sun was younger, the habitable zone was slightly closer in, and as it ages it will move out. At some stage, it will move out beyond the Earth, whereupon all life on this planet will cease.
For a very good explanation of habitable zones, follow my link.Are the scientific calculations for the habitable zone based on just our star the sun?The habitable zone just reflects the range where water will remain liquid on a surface (with an atmosphere roughly the same as our own).
Larger stars (red giants specifically) emit lower amounts of EMR, and the habitable zone will be nearer to that star rather than a younger, warmer star like our sun.
Habitable zone is just a guess though really, since we have only our type of life which we consider. Also, the state of water depends on pressure as well as temperature. You can have liquid water miles under a surface, on a world that is much distance from the habitable zone.
But when we are looking for "other earths", we are looking exclusively in that zone.Are the scientific calculations for the habitable zone based on just our star the sun?The habitable zone put simply is the temperate zone where water can exsits. They can calculate that distance from the star by looking at its temperature and using the inverse square lawAre the scientific calculations for the habitable zone based on just our star the sun?
No. Habitable zones are calculated based on the peak black-body radiation and temperature of the particular star, the distances from the star, and the triple point of water, 0 degrees Celsius, 32 degrees Fahrenheit, 273. whatever degrees Kelvin.
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