The Super-Earth that challenges our definition of a second home
In short: Located 635 light-years away, Kepler-22b is one of the most intriguing exoplanets ever discovered. This video explores why this world—with its vast oceans and unique orbital mechanics—is both a prime candidate for life and a scientific enigma.
Discovered in 2011 using the transit method, Kepler-22b is classified as a "super Earth." It orbits a G-type star (similar to our Sun) at a distance of 0.812 AU, completing one orbit every 289.9 days. Because it sits within the habitable zone, temperatures may allow for liquid water, making it a primary target in the search for extraterrestrial life.
Despite these similarities to Earth, Kepler-22b possesses distinct characteristics: it has a mass of approximately 9.1 Earths and a radius about 2.1 times that of our home planet. Its eccentricity is less than 0.72, creating a world where day and night cycles could be vastly different from our own.
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Sources
- Summary by Intellect · source: Kepler-22b – The Alien World That Shouldn’t Exist
- Also: Kepler-22 b - NASA Science
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