description Kepler-444 c Overview
Kepler-444 c is a small transiting exoplanet in the five-planet Kepler-444 system. It is smaller than Earth and orbits close to its K-type host star, so it is not considered an Earth-like habitable world. The system is notable because its star is more than 11 billion years old, demonstrating that systems of small rocky planets were already forming relatively early in the history of the Milky Way.
help Kepler-444 c FAQ
Is Kepler-444 c smaller than Earth?
Yes, Kepler-444 c is a small transiting planet with a radius below Earth's. It is one of five known planets in the compact Kepler-444 system.
Why is Kepler-444 c not considered habitable?
Kepler-444 c orbits close to its K-type host star, so it receives intense stellar energy and is not treated as an Earth-like habitable world. Its small size alone does not make its surface conditions Earth-like.
How old is the Kepler-444 system?
The Kepler-444 star is more than 11 billion years old, making the system far older than the Sun's roughly 4.6-billion-year age. Its five planets show that compact planetary systems existed early in the Milky Way's history.
How many planets orbit Kepler-444?
Five known transiting planets orbit Kepler-444, including Kepler-444 c. The planets are packed close to their host star and complete their orbits in relatively short periods.
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