The first planet found in a Sun-like star's habitable zone
In short: Discovered in 2011, Kepler-22b is a cosmic enigma that challenges our understanding of the cosmos. This video explores why this specific exoplanet remains one of the most fascinating worlds ever found outside our solar system.
Kepler-22b is classified as a 'super Earth,' a planet with a mass approximately 9.1 times that of Earth and a radius 2.1 times larger. It orbits a G-type star, which is similar to our own Sun, completing one full revolution every 289.9 days at a distance of 0.812 AU.
The planet is significant because it was the first exoplanet confirmed to orbit within a star's habitable zone—the region where temperatures might allow for liquid water. While it is a possible 'ocean world,' its unique characteristics continue to pose questions about the diversity of planets in the universe.
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Sources
- Summary by Intellect · source: Kepler 22b - The Mysterious World We Can’t Fully Understand | 4K
- Also: Kepler-22 b - NASA Science
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