On July 31, 2019 (June 29, 2019 in the lunar calendar), NASA discovered a "super-Earth" 31 light-years away. Comprehensive report, on July 31 local time, NASA announced that their Transiting Exoplanet Survey Satellite (TESS), about 31 light-years away from the earth, has discovered a "super-Earth" that may have life. Scientists named this "super-Earth" GJ357d, with a mass at least 6.1 times that of the earth, orbits a star much smaller than the sun and orbits every 55.7 days. Diana Kossakowski, a member of the team that discovered the new planet, said GJ357d would be at the right distance from its star to receive about the same amount of stellar energy as Mars receives from the sun. This means that if the planet had a dense atmosphere, its surface temperature would be suitable for the retention of liquid water, which could support life. However, if the planet did not have an atmosphere, its surface temperature would be about minus 53 degrees Celsius, well below the freezing point of water. Although it has not yet been confirmed whether the planet has an atmosphere, Lisa Kotinian, an associate professor of astronomy who led the study, said: "This is exciting because this is the first'super-Earth 'that humans have discovered nearby that could harbor life." She said that the telescope that will be put into use in 2025 may provide us with more information about the planet. As Professor Curtin said, "If GJ357d can show signs of life, it will be the first item on everyone's travel list." Indeed, in the vast universe, humans have been searching for beings similar to Earth. However, even if there is life on GJ357d, the distance of 31 light years is still a distance that cannot be crossed for humans at present. It is understood that the fastest space vehicle launched at present is the "New Horizons" probe. The speed is about 58,536 kilometers per hour. At this speed, it would take nearly 600,000 years to travel 31 light years. Therefore, many netizens expressed that they should forget about interstellar immigration and protect our planet!