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Alien Planets That Resemble Earth

By Antonia Čirjak January 31 2020

Do we have a viable alternate home? 
Do we have a viable alternate home? 

If you are not concerned about the future of our planet already, you should be. Things are not looking so good today. The pollution of air and oceans and global warming are changing the life on Earth as we know it. Do we have a viable alternate home? 

Tough To Meet Conditions

Information that the Kepler Space Observatory was collecting for nine years during which the Kepler telescope was in Earth’s orbit (2009-2018), tells us how there can be up to two billion planets in our galaxy that could support life. As a species, humans require special conditions that would enable us to live appropriately. Our potential new home needs to be the right size, orbiting another star neither too close or too far, and above everything - it needs to have water. The ideal distance is often referred to as the ‘’Goldilocks zone.’’ So, what are the most possible candidates for our new home discovered so far?

5. Gliese 667Cc

Scientists are still not sure about this one, and it may be that this exoplanet is too close to the sun that it orbits.
Scientists are still not sure about this one, and it may be that this exoplanet is too close to the sun that it orbits.

Scientists are still not sure about this one, and it may be that this exoplanet is too close to the sun that it orbits. Only 22 light-years away from our current home, Gliese 667Cc completes one full revolution around its sun in only 28 days. Compared to the time that it takes Earth to orbit our Sun, which is 365 days, this is very fast, and we would have to adapt to that super-fast change of seasons. Also, this exoplanet is around 4.5 times as massive as Earth. 

4. Kepler-62f

One big issue with this planet is that it orbits a star which is significantly cooler than the Sun in our system. Kepler-62f is around 40% bigger than Earth, and it needs 267 days to complete one full revolution. Around 1200 light-years away from us, this planet does have the potential to be our new home, if we do not forget our winter coats.

3. Kepler-186f

Kepler-186f , the First Earth-size Planet in the Habitable Zone
Kepler-186f , the First Earth-size Planet in the Habitable Zone

This exoplanet is the most similar to our own, at least when it comes to size. Only 10% bigger than Earth and around 500 light-years away from Earth, Kepler-186f has one potential problem. It is a bit too far away from its host star, so it receives only approximately 30% of energy compared to the amount of energy we receive from our sun. 

2. Kepler-69c

Around 70% bigger than our planet, this planet is the farthest from all we have discovered so far. 2,700 light-years away, Kepler-69c revolves around a sun that is about 80% radiant as ours, so it almost makes it a perfect candidate for a new Earth. One year on this planet lasts for 242 days, and it probably would not be so hard to adjust to those conditions. 

1. Kepler-22b

Earth and Kepler 22b
Earth and Kepler 22b

This planet is a bit more far away, and it would take us 600 light-years to reach it. It is substantially larger than our planet, more than 2 times the size of Earth. One year on this planet lasts for 290 days. However, the astronomers still need to collect evidence that would explain if Kepler-22b is rocky, or it is a gas giant like Jupiter. 

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