Scientists have discovered more than 4,000 planets outside our solar system since the first such planet was confirmed orbiting a Sun-like star in 1995, and more than half of these discoveries have been made by NASA’s Kepler space telescope, which was launched in 2009 on a mission to locate Extent of spread of Earth-like planets throughout the Milky Way. Discovering our planet’s first true “space Earth” is a long-awaited dream for astronomers — and recent discoveries of exoplanets have shown that small, rocky worlds like ours are abundant in the galaxy. Also read: Study: The Sun’s rings prevented our planet from turning into a “super-Earth.” An exoplanet, in order to be life-friendly, must be relatively small and therefore rocky, and orbit in the “habitable zone” around its star, so that water is present on the planet’s surface, and when telescopic observation techniques improve, but other factors will also be taken into account consideration, such as the composition of the planet’s atmosphere and how active its star is. Here are the ten most Earth-like space worlds that have been discovered so far, according to the Jeddah Astronomical Society. 1. GLIESE 667CC This planet is only 22 light years from Earth, at least 4.5 times the mass of Earth, and it completes one orbit around its star in just 28 days, but this red dwarf star is much cooler than the Sun, so it is believed that this planet It is located in the habitable area. However, Gliese 667cc, detected by the European Southern Observatory’s 3.6-meter telescope in Chile, is probably in orbit — perhaps close enough to be affected by red dwarf flares. 2. Kepler-22B, 600 light-years away, was the first Kepler planet to be found in the habitable zone around its star, but the planet is much larger than Earth – about 2.4 times the size of our planet, and it’s unclear if this is a “giant Earth” planet rocky, liquid, or gaseous. Kepler-22b’s orbit of 290 days is very similar to that of Earth 365, and it orbits a G star like the Sun, but that star is smaller and cooler than Earth. 3. Kepler-69c The planet Kepler-69c, which is about 2,700 light-years away, is about 70 percent larger than Earth, so, again, researchers aren’t sure of its composition. The planet completes one orbit around its star every 242 days, making its position similar to that of Venus within our solar system. Habitable area. 4. Kepler-62F This planet is about 40 percent larger than Earth and orbits a star cooler than the Sun, however, its 267-day orbit places this planet directly within the habitable zone, while orbiting close to its star. Earth than the Sun, and the star produces much less light. The planet (Kepler-62f) is about 1,200 light-years away and, because of its large size, is within the range of possible rocky planets that might have oceans. 5. Kepler-186F This planet is at most 10 percent larger than Earth, and also appears to lie in the habitable zone around its star, despite being at the outer edge of the region; It receives a third of the energy from its star that the Earth gets from the sun. The star Kepler-186f orbits is a red dwarf, so this planet is not a true twin of Earth, the planet is about 500 light-years away from Earth 6. Kepler-442b (Kepler-442B) This planet is 33 percent older than centenarians From Earth and completes an orbit around its star every 112 days at a distance of 1,194 light-years from Earth, its discovery announced in 2015. One study, published in the Monthly Data of the Royal Astronomical Society in 2021, found that the planet may receive enough light to maintain a biosphere The Great, the researchers analyzed the possibility that different planets are capable of photosynthesis. They found that the planet (Kepler-442b) receives enough radiation from its star 7. Kepler-452B, announced in 2015, is the first Earth-sized planet to orbit a sun-sized star, which is 60% larger. than Earth and its star (Kepler 452) is 10% larger than the Sun. The planet (Kepler 452b) is very similar to Earth and orbits its star in the habitable zone. The discoverers of Kepler-452b, which is 1.6 times the size of Earth, said it is likely rocky, which is 1,400 light-years from Earth, and takes just 20 more days to orbit its star than Earth. 8. Kepler-1649c (Kepler-1649C) When data from NASA’s Kepler space telescope was re-analysed, scientists discovered this Earth-sized planet orbiting its star in the habitable zone. While collecting raw data from the telescope, the computer algorithm misidentified the object, but it was discovered as a planet in 2020. The planet (Kepler-1649c) is 300 light years from Earth and is only 1.06 times larger than our planet. When comparing the light that the two planets receive from their stars, scientists have found that this planet receives 75 percent of the light that Earth receives from the sun 9. Proxima Centauri B This planet is only four light years from Earth, making it the closest known planet from Earth outside our solar system, Discovered in 2016, its mass is 1.27 times that of Earth. Since this planet is located in the habitable zone around its star, Proxima Centauri is exposed to intense ultraviolet radiation, because it is very close to its star and has an orbital period of only 11.2 days. 10. Trappist-1e Seven planets discovered at once orbiting the star (Trapist-1) are approximately the size of Earth and are located in the habitable zone around this star. The water on most of these planets likely evaporated early in the formation of this system, but a 2018 study found that some of these planets could contain more water than Earth’s oceans. One of the planets, called TRAPPIST-1E, is believed to support life as we know it. .
10 most Earth-like planets