Problems with habitability on Venus
Scientists speculate that there may once have been life on Venus. Recent discoveries prove that there is deuterium in Venus’s atmosphere, residue from traces of water which for temperature reasons is no longer on the planet surface. However, there are a variety of other factors which are necessary to check to see if there would have been life on the barren planet. The first is rotation sped, which must have had to be larger than the present rate of 243 km/h which is too small to generate a magnetic field to protect life from radiation. However, there is a distinct possibility that Venus may have been faster spinning in the past given that scientists speculate the same situation occurred or the earth. This second is the need for greater concentrations of nitrogen, which is uncertain. Earth’s atmosphere is around 77% Nitrogen, and it is reasonable to assume that the same situation would have to exist for Venus to be habitable.
The manifold variables required to host life should give us all an appreciation of how rare earth’s situation is. Scientists believe that the mon worlds that have water under the crust our under ice sheets may have life, but the scope of this life could be severely limited without the photosynthesis of sunlight. The requirement for life – a combination of rotation speed to generate a magnetic field, combined with distance and the right atmospheric composition, is rare and imposes many conditions.