Earth-like planet

Engr Mansoor Ahmed
Faisalabad

The planet Gliese 1132 b is an exoplanet orbiting a red dwarf star which is around 1.4 times the size of our planet and is situated approximately 39 light years away. It was discovered by the MEarth-South array in Chile. The discovery of planet GJ1132b was first announced in 2015. It lies in the Vela constellation in the southern hemisphere. In April 2017, an atmosphere was confirmed around Gliese 1132 b. It is the most Earth-like exoplanet to date that is known to have an atmosphere. Scientists have discovered that the earth-like planet is shrouded in a thick layer of gasses that are either water or methane or a blend of both.
It has been called “one of the most important planets ever discovered beyond the Solar System”: Due to its relative proximity to Earth, telescopes should be able to determine the composition of its atmosphere, the speed of its winds and the colour of its sunsets. Though, it is highly doubtful that GJ1132b is habitable as it has a surface temperature of 370 0C. Usually the hottest temperature that life has been able to survive on Earth is 120 0C and that’s far cooler than this planet.
It is possible that one side of the planet is cooler, because it is presumed to be tidally locked due to its proximity to its star; however, under most circumstances where an atmosphere is thick, it would be able to transfer heat to the far side. The planet receives 19 times more stellar radiation than Earth. Scientists say that planets around low mass stars can have atmospheres and because there are so many of those in the Universe, it makes it that much more likely that one might have life.

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