The Godzilla of Earths discovered: 17 times the size of Earth

The Godzilla of Earth’s – Kepler 10c – has been discovered. This planet weighs about 17 times as much as Earth and is about 18,000 miles (29,000 km) across.

Image Credit: Harvard-Smithsonian Center for Astrophysics

Image Credit: Harvard-Smithsonian Center for Astrophysics

While this planet is Earth-like, it doesn’t mean it can sustain life. With an orbit of just 45 days, the planet is too close to its sun for water to remain liquid. The composition is quite different as well. While our earth is about 1% water and oxygen in mass, Kepler 10c weighs in around 10% oxygen and water.

Under the extreme gravity of Kepler 10c’s mass, it’s likely that the water it has may be bound up in minerals forming solid matter despite the high temperatures.

Kepler 10c isn’t alone and has a sibling named Kepler 10b. Kepler 10b is predominantly rocky and was discoverd in 2011. However, unlike Kepler 10c, Kepler 10b is only about 3 times the size of Earth. It is also much closer to its sun and therefore much hotter.

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