The Milky Way Galaxy we live in is like a sparkling sea of the Milky Way, in which hundreds of billions of stars and planets are floating, which are like scattered pearls on the seabed, the number of which is beyond imagination. In this vast sea of stars, the Earth is like a lucky flatboat, not only carrying the mountains, lakes and seas of the magnificent but more miraculously nurturing the miracle of life. Life, especially the emergence of human beings, for this flatboat called the Earth, added the most splendid. We are like brave explorers, with the light of wisdom to penetrate the fog of the unknown, step by step to unveil the deep secrets of Mother Earth so that the story of this blue planet is more colourful, vivid and legendary.

Scientists have travelled through the mists of the infinite universe to unveil an exciting secret - the discovery of two suspected life-giving planetary sisters in a distant yet relatively close stellar family, lying quietly in the tender embrace of our home, just 15.8 light-years away. It was like stumbling across a page in a vast sea of books that contained a new chapter in the diversity of life. For a long time, scientists, like lonely travellers, have believed that Earth is a lonely oasis of life in the universe, but as the boundaries of knowledge of the universe continue to widen, the door to infinite possibilities has quietly opened in the minds of most people, and it is believed that in the vast arena of the universe, there must be other dances of life that are being staged.

In the grand symphony of the universe, each star system is like a well-decorated stage, and the planets located on these stages play the role of possible actors in the theatre of life. According to the latest astronomical discoveries, we seem to have found two new ‘potential stars’ in the vastness of the Universe - Gliese 1002b and Gliese 1002c, which are located in the cosmic neighbourhood of the Earth, only 15 light-years away and are in the golden patch of their respective stellar systems. They are located just 15 light-years away from Earth in the neighbourhood of the Universe, in the golden habitable zone of their respective star systems, as if they were specially chosen by the Universe to be the hotbeds of life. These two planets, like two brilliant jewels, are set in orbits so close to their parent stars that they are even closer to the Sun than the shy Mercury in our solar system. Gliese 1002b orbits its star at a graceful distance of just 6.8 million kilometres, while Gliese 1002c dances lightly at a slightly farther distance of 11 million kilometres, and they each weave a close and sharp dance with their star at an astonishing rate - about 10 and 20 days a lap, respectively.

They are also quite sizable, with Gliese 1002b slightly heavier than Earth, at 1.1 times its mass, and Gliese 1002c even more robust, at 1.4 times Earth's mass. It is tempting to think that if Earth were a standard coin in the universe, then these two planets would be slightly inflated, slightly rounded slabs of copper just waiting to be flipped over to the other side of life. However, the life stage is much more than a ticket to the habitable zone. Although these two planets have stepped into that seemingly promising zone, it remains an open question whether they have enough ‘equipment’ - such as suitable atmospheres, liquid water, and life-protecting magnetic fields - to support life in all its splendour.

Gliese 581g instantly attracted the attention of scientists around the world in 2010. Like a visitor from afar, it carries a strikingly similar quality and ecological characteristics to those of Earth and has become a recognised candidate for life in the scientific community, stirring up ripples of infinite reverie for extraterrestrial civilisations. Gliese 581g, the universe of the ‘twin brother’, its weight is about 1.2 times that of the Earth, the body is more stout, slightly larger in size, and the mass is more than four times that of the Earth. Such a body, so that its gravitational network than the Earth more closely, as if a guardian with a strong arm, tightly embracing the possible breeding of the seed of life. On this planet, instead of being a shackle, the powerful gravitational force is a guardian of life. Like a shrewd gardener, it carefully regulates everything on the planet's surface, providing a stable arena for life to sprout and grow.

（Writer：Ganny）