The heat wave that lasted for months this year was estimated to have scared many people, followed by the epidemic that made many people spend their days like years, so perhaps we all especially want to find a cooler, less home testing nucleic acid planet to live. An international team of scientists from the University of Liege, Belgium, may have you over the moon, as they have discovered a super-Earth just 100 light-years from Earth around a red dwarf star in the constellation Pojang.
This red dwarf, known as LP 890-9, has only 12% of the mass of our Sun, a radius of 15%, and a surface temperature half that of the Sun, 2871 K.
Two planets have been discovered around this red dwarf star, both of which are super-Earths larger than our planet.
The innermost one, LP 890-9b, has a radius 32% larger than that of Earth, reaching 8,419 km. The planet is only 2.8 million kilometers from the red dwarf, only one-twentieth of the distance between Mercury, the closest planet in our solar system, and the Sun. 2.7 days to orbit the red dwarf for one week, the surface may be too hot for our liking.
The second, LP 890-9c, has a radius 37% larger than Earth's, reaching 8,718 km, and is 6 million km from the red dwarf, about one-tenth the distance from Mercury to the Sun, and takes 8.46 days to orbit the red dwarf.
Scientists' calculations show that the planet is at the inner edge of the star system's habitable zone, similar to our Earth. We are also at the inner edge of the solar system's habitable zone, and 1% closer to the Sun, I'm afraid, would no longer be suitable for life - that's probably the main reason why fossil energy heats the Earth by 1.1°C and we can't stand it, and if it were further away, it would be more resilient.
Many people may have a question about why it is so close to its sun and still maintains liquid water and an atmosphere that is suitable for life? Our Earth is 150 million kilometers away from the sun, which is 25 times as far away as it is.
This is because it receives radiation from red dwarf stars, the temperature is relatively low, plus the attenuation of sunlight is proportional to the square of the distance, so it is in the habitable zone at 6 million kilometers, while our Earth is only habitable at 150 million kilometers, which is the main basis for scientists to calculate whether a planet may have liquid water, is not habitable.
How is it? Aren't you a little excited? I've been bored at home for 8 days, it would be great to go there.
You do not rejoice too early, the monkey rush to pack the bags. Although LP 890-9c is only 100 light-years away from us, but it is still a distance beyond the reach of human technology now, and this super Earth has no atmosphere are still unclear, need Webb telescope further detection.
Also being so close to the parent star, it is likely to have been tidally locked, just like our moon, always facing us with the same side. This may not be a problem on the moon, but it is hard to know exactly what kind of climate would develop with this planet always facing the star on one side, while the other side is perpetually dark and cold, which may also affect its habitability.
But I think such a planet is actually very good, no matter how hot it is on the front and cold on the back, there will always be the morning and evening areas at the junction of day and night to form the right temperature for the survival of life, just the wind may be a little stronger.
But there is still a problem, the planet although the diameter is only 37% larger than the Earth, but the mass may be more than 10 times the Earth, which makes its surface gravity may be too large, your 70 kg of weight to there may become more than 100 kg or even heavier, your heart is afraid that can not bear.
But you should not be discouraged by this, because scientists two weeks ago also discovered a super Earth TOI-1452b in the habitable zone, also 100 light years from Earth, also orbiting a red dwarf star, although the radius is 70% larger than the Earth, five times the mass of the Earth, but it is likely to be an alien water world.
It probably has 30 percent of its mass in water, while our Earth has less than 1 percent of its mass in water, which means its surface is likely to be completely covered with water - so you don't have to worry about gravity being too heavy when you go there, you can live in the water like a fish, and you can watch two sunrises because it has two suns.
But this also has disadvantages, after a number of years, I'm afraid your offspring will grow as big as a whale.
So look, except for the Earth, we can't actually go anywhere, and even if we do, it's hard to survive, so it's better to love your planet and not heat it up anymore.
