Whats the acceptable range of temperatures on habitable planets?
Does it need to be similar to Earth? People studying habitability generally resort to the concepts of sophisticated forms of life, which require fluid water, which would imply a temperature range of zero to 100 degrees Celsius under an atmospheric pressure of one Earth atmosphere. However, we actually know there are life forms possible, which can tolerate higher [and] lower temperatures, which is actually augmenting the concept of habitability. What’s the most likely form of life to be discovered? In the early 1990s, the first extrasolar planet was identified. What change allowed this to occur? It was a technology change – the ability to have ultrasensitive spectra of stellar photospheres [the visible surface of a star]. Planets still are discovered most of the time by the gravitational pull on parent stars. This is measured by the so-called Doppler effect of spectra lines in the spectra of stars. To identify such an effect, in an effort to see the orbit of a planet around a star, you
