According to a research led by Washington State University, a total number of 24 “superhabitable” planets may be more suitable to live on than Earth, the research claims these planets have better stars than the sun.
The research found planets that were slightly bigger, older, warmer and wetter than Earth.
It was also said that lives will prosper easily on planets that orbit changing stars with extended life span than the sun at slower pace.
These 24 planets would take more than 100 light years to travel, this means that these planets are very difficult to sight on Earth.
Professor Dirk Schulze-Makuch, one of the led researchers, said: “With the next space telescopes coming up, we will get more information, so it is important to select some targets.”
“We have to focus on certain planets that have the most promising conditions for complex life.”
Astronomers have created a “superhabitability criteria”, required for survival, they have used this models against 4500 known exoplanets.
The researchers checked out the systems with G stars, the G stars have short lifespans of less than 10 billion years, just like the earth’s sun. They also looked at systems with K dwarf stars. The K dwarf stars are much smaller and cooler with a lifespan ranging from 20 billion to 70 billion years, much more longer than the G stars. This means that planets orbiting near these stars can be older, therefore life might be able to evolve on these planets just like it has on Earth.
The researchers searched for a planet that is about 10 percent more larger than Earth, which would mean more land for inhabitance.
A greater mass was also a required because this would help the planet conserve its interior heat for longer, it will also help the planet maintain gravity to help conserve the atmosphere for a longer time period.
Another key feature to consider is water. The researchers searched for a planet with water slightly more than Earth’s in these superhabitable planets. They also searched for a planet with about 5C surface temperature than Earth for better inhabitance.
None of the 24 planets met up to this requirement, but one of the planets met four of the most important characteristics, which means the planet might be more inhabitable than Earth.
Professor Dirk Schulze-Makuch announced that: “It’s sometimes difficult to convey this principle of superhabitable planets because we think we have the best planet.
“We have a great number of complex and diverse lifeforms, and many that can survive in extreme environments. It is good to have adaptable life, but that doesn’t mean that we have the best of everything”.