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In the distant universe, there are endless unknowns hidden. People have been looking for Earth-like planets to achieve sustainable development of mankind. After all, resources on Earth are limited, and migrating to other planets could be the future of human civilization. But such a migration is not easy, because the farther and farther away from the solar system, the mysteries of the universe become more puzzling.
Super-Earths, or a type of terrestrial planet, have conditions and environments very similar to Earth's, but are more massive, usually between 1 and 10 times the mass of Earth. Within the solar system, only Earth is considered a terrestrial planet, and super-Earth discoveries usually occur outside the solar system, i.e. exoplanets.
Far from the edge of the solar system, many potential super-Earths have been discovered. This discovery is significant because if these planets resemble Earth, there may be a suitable environment for human existence. After all, the earth's resources are finite, and some are even non-renewable, so for the future, we need to find new homes.
The most exciting is the Gliese 667C, a planet just 22 light-years away from Earth and an 84% similarity to Earth. It is located in the star system, is the companion star of Gliese 667C, is also a red dwarf, there are also two habitable planets in this galaxy, they have the potential to form liquid water compared to Earth, the surface temperature of the planet is moderate, and it is one of the most likely to migrate and live.
However, it is worth mentioning that there are three stars in this galaxy, so in the sky of Gliese 667Cc, there may be three suns rising at the same time. Although this is peculiar, it has a limited environmental impact on the planet, and Gliese 667Cc orbits Gliese 667C for 28 days, which means that people can experience short and many moon phase changes there.
However, Gliese 667Cc isn't the only super-Earth that has caught scientists' attention. HD 69830 d is another well-studied planet, located about 42 light-years from Earth. It has 17 times the mass of Earth and 86% of the mass of its parent star, but the most encouraging thing is its age. HD 69830 d is about 7 billion years old, meaning it has billions of years of potential life evolution.
However, researchers have also raised some concerns that HD 69830 d is 2.4 billion years older than Earth. If its evolution is similar to that of Earth, does that mean that more advanced organisms have been born on it? Will civilization on this planet progress more than human civilization? There are still no definitive answers to these questions.
While scientists have been searching for super-Earths, the process is not easy. The universe is so large and resources are finite, scientists must focus on more close, similar planets to increase the likelihood of human migration. In the end, people hope to find Earth-like planets and lay a solid foundation for the continuation of human civilization.
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