A team of astronomers recently discovered eight new exoplanets that orbit their stars at a distance that would allow them to have liquid water on their surface, according to National Geographic magazine. Of these eight, there are two that experts have identified as the most Earth-like exoplanets to date: Kepler438b and Kepler-442b.
Why are they similar to our planet? Both exoplanets revolve around the starshow the earth does to the sun Both do the same around two red dwarfs smaller and cooler than our sun: 438b orbits its star in 35 days, while 442b takes just 112 days.
One side, 438b astronomers estimate that it is 12% larger in diameter than Earth’s and has a 70% chance of being a rocky planet. In addition, it receives 40% more light than our planet, so it has a 70% chance of being in its star’s habitable zone.
Secondly, 442b it is a third larger than Earth and has a 60% chance of having rocks. Also, 442B receives about two-thirds of the light that reaches Earth, so its chances of being in the habitable zone are, according to scientists, 97%.
That the planet gets more light doesn’t mean it’s more habitable. For the chances to be higher, it is necessary that the right light come. That is, if there was a lot of light, the water would boil and evaporate. If he got too little, the water would eventually freeze.
“We don’t know for sure if any of the planets in our sample are actually habitable.. What we can say is that they are promising candidates”, says co-author David Kipping of the CFA. Before these two new exoplanets were discovered, the most Earth-like ones were Kepler-186f (1.1 times the size of Earth and 32% more light) and Kepler-62f (1.4 times the size of our planet and 41% more light).
Other known exoplanets Gliese 667CC (22 light-years from Earth, 4.5 times that and 28 days to go around its star), Next Centauri B (closest to Earth, but has extremely strong ultraviolet radiation) or TR Associated PressPIST-1E, which meets very good conditions because its core is iron.