People may prefer to live outside Earth in other planets to escape the harmful greenhouse gasses someday.
Sara Seager, Professor of Planetary Science and Physics at the Massachusetts Institute of Technology, published a paper on an online journal Space.com discussing about exoplanet habitability as mankind’s possible solution to escape the greenhouse gases.
Exoplanet habitability is an idea of developing and sustaining life in outside planets- the exoplanets. It may be within the solar system or on other parts of the universe
The Goldilocks zone is invalid
Seager opposed the idea of the “Goldilocks zone” where the other planets should be similar to the size of Earth because exoplanets that are larger or smaller than Earth may be too hot or too cold to sustain water.
Seager believes that there is no Goldilocks zone because any exoplanet can be habitable by the concept of physics and chemistry. There are certain universal laws that would allow planets to stay further from the stars but can still maintain conditions that can support life by locking in enough heat from the source similar to Earth locking the greenhouse gasses.
Potential exoplanets
One potential habitable exoplanet is a huge planet rich in hydrogen gas (H2). Smaller planets like Earth is trapping hydrogen gas due to weak gravitational pull. H2 can interact with hydroxyl (OH) to produce methane (CH4), a stronger greenhouse gas than our carbon dioxide (CO2). This huge planet should be able to trap sufficient heat because of the methane which can then help sustain water and life.
Another that has potential is the so-called “rogue planets” which may have enough heat from its core to make it fit for habitation even if it doesn’t orbit to any star.
If all these theories are right, there are many exoplanets capable of holding water where human can take off in the future once the greenhouse gasses destroy Earth.
