Planets With Awry Tilt Can Be Habitable If They Have Deep Oceans
A very important research has been done by MIT scientists which says that the habitability on any planet doesn’t necessarily depend on the position of its tilt. However, two of other factors, presence of water and planet’s distance from its star, which are used as criteria for assessment of the habitability become more crucial.
According to the study, if the planet’s water depth was 165 feet minimum and if it existed in the habitual zone of its star, there could be a strong possibility of life even if it was tilted sideways. It is important to mention that the tilt is assumed to be responsible for the variation of seasons on our real Earth.
In this study, which has quietly challenged the old definition of the habitable planets, the scientists considered few important facts before doing the stimulation for an Earth-sized planet fully covered with water. The scientists modeled the basic concepts including the distance of the planet and its star and the size of the planet.
They kept the planet in the habitable zone of its star; this is the zone which lies somewhere in the middle of too-farness and too-nearness from the star. Because when the planet is too close to the star, its temperature will be too high and vise versa.
Similarly they adjusted its size using the concept which says: a planet too big contains extraordinarily high gaseous pressure, and a planet too small possesses almost negligible gravity to host a suitable atmosphere for life. That is why, they used an Earth-sized planet because it is thought to be the ideal for existence of life.
These were the common adjustments which scientists made. However, they changed two very important factors in their stimulation activity. Firstly, they covered the planet with water and took the tilts of its axis far away. Although the tilt was made 90 degrees as compared to Earth’s 23.5 degrees, the study proved that the position of tilt wasn’t an indispensability for the habitability.
Nonetheless, it is evident from this study that the depth of the ocean matters the most for habitability on any planet.
“Oceans on the earth are the big regulator of the climate system. Naturally, the question is how you would apply that knowledge to the planets that are in a different astronomical state than Earth,” told study lead author David Ferreira. “One would expect oceans in such planets would be a strong regulator on the climate as well, and a factor in habitability.”