பூமியை போன்ற மற்றொரு கோள் kepler 452B, Kepler-452b is an exoplanet that orbits the star Kepler-452, which is situated in the constellation Cygnus around 1,400 light-years distant from Earth. It was found by NASA's Kepler spacecraft, which is designed to look for exoplanets by watching a star's light dimming as a planet passes in front of it.

Because of its resemblance to Earth, Kepler-452b is commonly referred to as "cousin" or "older cousin." NASA announced it on July 2015. Kepler-452b has the following important characteristics:


Kepler-452b has a diameter that is roughly 1.5 times that of Earth, making it a super-Earth. It is expected to be rocky, similar to Earth.

It has an orbital period of around 385 days, which is quite near to Earth's orbital period of 365 days.

Kepler-452, the star around which Kepler-452b orbits, is identical to our Sun, but slightly older. This closeness in star properties suggests that Kepler-452b may have circumstances conducive to the presence of liquid water.

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Jeyanthi Santhosh

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Hi,

In this video, we're going to talk about Super Earth, a planet that's better than Earth. We'll discuss the advantages of living on Super Earth, and why you should want to live on this planet.

If you're looking for a better planet to live on, then you should check out Super Earth. Super Earth has a lot of advantages over Earth, including a much better environment and a much higher standard of living. In this video, we'll discuss these advantages and why you should want to live on Super Earth!

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Vaan Veli
Santhosh

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#k218b #superearth #earth2 | K2-18b is an exoplanet located about 124 light-years away from Earth in the constellation Leo. It's one of the many exoplanets discovered by the Kepler Space Telescope during its K2 mission.

Key Features:
Type: K2-18b is classified as a "mini-Neptune" or "sub-Neptune," which means it's larger than Earth but smaller than Neptune.
Radius and Mass: The planet has a radius about 2.6 times that of Earth and a mass about 8.6 times greater, indicating that it has a substantial atmosphere.
Host Star: The exoplanet orbits a red dwarf star (K2-18) that is smaller and cooler than our Sun. The star's lower temperature allows K2-18b to orbit closer to it while still being in the habitable zone.
Atmosphere and Potential Habitability:
Atmosphere: One of the most intriguing aspects of K2-18b is its atmosphere. Observations using the Hubble Space Telescope have detected water vapor in its atmosphere, making it one of the few exoplanets where water vapor has been confirmed.
Potential for Life: Despite the presence of water vapor, whether K2-18b can support life is still uncertain. The planet's atmosphere is likely rich in hydrogen, which is not ideal for life as we know it. Moreover, the exact surface conditions are unknown, but it's unlikely to be similar to Earth’s, given the difference in size, mass, and atmospheric composition.
Recent Developments:
In 2023, astronomers made further observations using the James Webb Space Telescope (JWST). They found additional details about the atmosphere of K2-18b, including possible indications of other molecules like methane and carbon dioxide, which could suggest some form of chemical processes happening on the planet, although this doesn't necessarily mean life exists there.

Orbit and Year Length:
K2-18b has an orbital period of about 33 days, meaning a year on K2-18b is only 33 Earth days long.
K2-18b's discovery and the subsequent studies have sparked significant interest in the scientific community, especially regarding the search for habitable worlds beyond our solar system.


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