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Institut mermoz e learning1/6/2024 ![]() ![]() This, in turn, would be accompanied by the carbonate–silicate cycle being "buffered", extending its lifetime due to increased volcanic activity on Kepler-452b. However, due to the planet Kepler-452b being 50 percent bigger in terms of size, it is likely to have an estimated mass of 5 M Earth, which could allow it to hold on to any oceans it may have for a longer period, preventing Kepler-452b from succumbing to runaway greenhouse effect for another 500 million years. If Kepler-452b is a rocky planet, it may be subject to a runaway greenhouse effect similar to that seen on Venus. At this point in its star's evolution, Kepler-452b is currently receiving 10% more energy from its parent star than Earth is currently receiving from the Sun. However, the star is 6 billion years old, making it 1.5 billion years older than the Sun. It orbits a G2V-type star, like the Sun, which is 20% more luminous, with nearly the same temperature and mass. It is not clear if Kepler-452b offers habitable environments. It is not known if Kepler-452b is a rocky planet but based on its small radius, Kepler-452b is likely to be rocky. Ĭomparison of Kepler-452b and related exoplanets with Earth. At the speed of the New Horizons spacecraft, at about 59,000 km/h (16,000 m/s 37,000 mph), it would take approximately 30 million years to get there. The planet is about 1,800 light-years (550 pc) away from the Solar System. The Kepler space telescope identified the exoplanet, and its discovery was announced by NASA on 23 July 2015. However, it is unknown if it is entirely habitable, as it is receiving slightly more energy than Earth and could be subjected to a runaway greenhouse effect. It is the first potentially rocky super-Earth planet discovered orbiting within the habitable zone of a very sunlike star. Kepler-452b orbits its star at a distance of 1.04 AU (156 million km 97 million mi) from its host star (nearly the same distance as Earth from the Sun), with an orbital period of roughly 384 days, has a mass at least five times that of Earth, and has a radius of around 1.5 times that of Earth. It is located about 1,800 light-years (550 pc) from Earth in the constellation of Cygnus. Kepler-452b (a planet sometimes quoted to be an Earth 2.0 or Earth's Cousin based on its characteristics also known by its Kepler Object of Interest designation KOI-7016.01) is a super-Earth exoplanet orbiting within the inner edge of the habitable zone of the sunlike star Kepler-452 and is the only planet in the system discovered by Kepler.
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